If people thought Jesus were black Christianity in Europe would not have survived, imo. And yes, slavery would still have happened.

Whatever. IF there has been a Jesus - no proof, no time machine, he would have veen a curly headed brown man of Mid-East origins.

There was no Jesus, no historical evidence despite the fact that the Romans were obsessed with keeping records, all made up shit.

Don't you mean assuming he was black rather than imaginary? A real human being born in Judea while it was under Roman control would probably have looked more like an Egyptian or Arab than the European he's usually portrayed as.

As for slavery, religion was a convenient excuse, but the real reason was greed. If religion didn't provide an excuse there would have been another.

Being a mythical character, anyone is free to imagine Jesus as whatever race he or she pleases.

We make gods out of our own image.

Assumption No. 1: The historic Jesus actually existed.
Not sure that this is actually a safe assumption to make.

Assumption No. 2: The historic Jesus was black.
This would make no actual difference, as Jesus of Christianity is probably very different from the historic Jesus, not only in looks, but in their worldviews.

Assumption No. 3: Let's assume that for some reason that Christian Jesus was accepted as black. Would this have changed anything? Maybe. But I don't think a religion makes you a racist; but rather racism shapes religious beliefs. White European killing machine would not have been deterred. They would have abandoned Jesus, but found something else as their banner god.

IF Jesus had actually been a real person (I don't think for one moment that he was),
he'd have been brown.
You know, like most of the people who occupy that part of the world have been.

Slavery was around before white people got a hold of it.
Black people were slaves before any of them were kidnapped and taken to
the "New World".

I am sure that an apocalyptic preacher from C1st Levant would have the same skin colouring as the inhabitants of The Levant today!

With regard to slavery, it’s roots are mercantile and political. Not likely that skin colour of any rabble-rouser would be relevant.

I don't think Christians would be any less racist if Jesus were Black. According to the Bible, Jesus was Jewish and that hasn't stopped Christians from ridiculing, slandering, torturing, and killing Jews for the past 2000 years.

1. The Bible condones slavery among a host of other barbaric behaviors.

2. European Whites adopted an especially vicious practice of slavery to pursue their colonial expansion, this in spite of being intensely theocratic and guided by Christianity. And as reiterated in WWII, Christianity does not instill ethics/morality in its believers, and actually compels them to great evil.

If he did exist of course he was black or at least very well tanned.

Who knows. Christians always find a way of distorting reality to fit their beliefs.

i don't understand the question. what if? he probably never existed at all, so how could he be any race or skin tone or whatever at all? but actually black jews lived in africa, particularly ethiopia, but i don't know at what historical point, whether before or after the common era. i suspect after. i don't think the jews of the pericommon era within judea were black. they may have been fairly dark-skinned compared to some europeans. they were certainly not blond and blue-eyed with fair, european-looking skin, the way jesus is most often portrayed. so no, it would not have affected slavery in the united states for jesus to have existed and been black. white people would simply have painted him the way they already do. presto white-o.

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He was black. This is how very likely but not in the "Greatest Lie Ever Sold."

John vision

13 Among the lampstands was One like the Son of Man, dressed in a long robe, with a golden sash around His chest. 
14 The hair of His head was whitelike wool, as white as snow, and His eyeswere like a blazing fire. 
15 His feet were like polished bronze refined in a furnace, and His voice was like the roar of many waters.…

Polished bronze feet? sounds brown to me.

When Christians tell me they have witnessed Jesus. I ask, what did Jesus look like? Was he blue eyes, blonde, and white?. Or was he brown or black? 

They give no answer, and expect me to give up my entire soul. Without any ID of Jesus or without mostly historical facts.
Got only one soul, noway.

This question has a lot of layers: Christianity Is a Religion, thus it can stand alone from culture but Christianity is also very much European.
Human beings fashion our gods from our own image. Therefore since Christianity was firmly established decades after Jesus' death by Europeans, the new followers did just that. In this respect, Jesus being conceived of as white is not rooted in racial superiority but instead because of the aforementioned human proclivity. Further evidence of this is found in Ethiopia, Christianity's earliest African adapters, where you can find paintings of a black Jesus.

Slavery and conquest are as old as time and was practice ubiquitously in ancient times. Slavery was mentioned and condoned in the Old Testament. The Romans believed it noble to conquer other people in order to spread the " Roman way" to the world, which included but was not limited to introducing their gods.

Christianity may not have started out European, but it is European because they introduced it to the world. In the 2000 years after establishing Christianity, especially in the first 1900 years, European history is filled with many atrocities perpetrated by them. Often times under the guise or illusion of spreading the religion to the world. This is what informs our association between Christianity and the " white European killing machine". Therefore, Christianity is seen as murderous because it was introduced by Europeans, while they were conquering and pillaging other countries. The Crusades and Inquisition also help to strengthen this association.

With Slavery and Colonialism, Christianity became racial. The concept of race may have been around for many centuries but it's modern iteration took form in the 20th Century, at the height of European colonialism. Through their conquests, they were responsible for Christian supremacy. Out of this supremacy as well as other factors, including but not limited to the fact that Christianity was European and thus "white", white supremacy was born. Stories from the Bible were used to bolster the legitimacy of white supremacy and thus they became intertwined. The Ku Klux Klan also contributed to Christianity being known as racist.

Once other "races" adapted Christianity, specifically African Americans, they began to fashion god in their own image. The concept of Black Jesus was born. Neither side wants to give up this human proclivity, as a result, the tension ensues. Coupled this with the racial history in America and Christianity's association with race is even more cemented in our minds.

Christianity stands on it own as a religion. As far as religions go it is very dogmatic. This is perhaps the biggest issue with religion. In my experience, the stronger the dogma, the stronger the possibility it can be used for evil under the illusion of doing good. In Christianity, they are strict rules to follow that leads to eternal consequences. Yes, there is salvation at the end but only if you follow the rules. Christianity's, inherent dogmatic nature, can and has countless times influence its leaders and followers to do some heinous things. Again, think of the inquisition. Christianity's dogma needs no help from it adherents other than to carry out the dogma.

In Conclusion, Christian history and European history became intertwined early in Christianity's development. Thus, we rightly associate the two histories together. Thus many of the adjectives like racist or murderous we can use to describe European history can be attributed to Christianity, whether or not these are the values that the religion espouses. Therefore my answer to your question is yes, the transatlantic slave trade would have still happened because the color of Jesus' skin had nothing to do with it. Conquest and/or colonization were on those European's minds just like the Romans before them.

A couple of things to note. IF Christ actually lived, he was middle eastern, therefore had dark skin complexion. He was not "black" as most from central and southern Africa. The depictions of Christ as a white amn commoes from the Germans who dipicted Christ in their churches as a slender white man. If he was a carpenter, then Christ was not a slender man, but muscular. There is no real description of the man in the Bible, so we are relying on depictions made hundereds and thousands of year after his death.

My favorite "What If"....

What if Spartacus had a Piper Cub?

Well we know Jesus, (if there was the Jesus of the Christians), was not the blond haired blue eyed guy from the cover of romance novels that we see all the time.
Slavery is another whole different question. Slavery had gone on in the world since the evolution of man.
I think a better question would be - would there be a Christian religion as we know it if Jesus were black or portrayed as black in the story?

Define "Blackness 20 Centuries ago.... ????? Waiting on your Answer.... ?????

One thing is for certain, Jesus was not a blue-eyed blond Caucasian.
A small possibility he was black, but almost certainly an olive-skinned semite who looked much like the millions of semites whose looks Christians have insulted and have persecuted down through the centuries.

For most of the people in US, Jesus is white blond guy. They are not gonna believe anything else

He could have been blue for what I care.