Over population. The answer...The emancipation of women. Take them off the cycle of breeding, Educate and empower them to empower themselves and us. I could go on but it's 6.42 am and I need some sleep before a big day.And get a photo up of me so I can go up a level. Hope you enjoy your day

Humans

Money? ie: the Tories and the Republicans

Think the root of all the problems in the world would be the the thought of there being a root. I shall explain. Now talking of problems I assume it means problems created by humans, not problems like earthquakes, gamma rays, black holes, that are caused by natural phenomena and there roots are basically the laws of nature or physics, with the constants. Root is basically essentialism, or reductionism, one hand that there has to be a central cause or root, an essence that causes the problems. Christian religion the root would be sin, so you need a sacrifice to clean the sin, that is the eschatology and cristology, and all the religious coming to your door and spreading the good news, other religions and even philosophies have their own narratives as to roots. In Buddhism the root is desire or rather the grasping or aversion of desire, that leads to karma and this leads to suffering and reincarnation. Political philosophies also try to narrate that humans problems require political solutions, so we got the neoliberals or libertarians that the problem is a big state (forget that most of the history of humanity there were no states therefore no progress) and you need small states, lower taxes and let big corporations take care of everything, the communists is that capital is the problem, or big corporations, again the solution is political, close all big corporations and make the state in charge of everything. The problem with trying to find a root it leads to essentialism, that all objects have an essence so it difficult to leave room for a dynamic, progressive worldview, and the other is reductionism, reducing all problems to one root, so it all requires one solution, which has lead to dangerous religions and political philosophies. I prefer that rather than simple cause and effect, roots, essence, reduction to one factor, explain the world through interdependence, dynamics, complexity, emergence.

Evolutionary mismatch.

[en.wikipedia.org]

Active ignorance masked at morality wrapped in selfishness...

Religion.

Honestly the root of all conflict stems from culture and scarcity of resources.

Failure to communicate

Well, not sure about 'all' of them: But I think the egocentrity of religion is a major issue.

I think there are several, but become more and more prevalent are greed and tribalism

There is no single root of all problems in the world. Greed =, "true belief" in total ystem ideologies, egocentrism, ethnocentrism are all among the major causes.

Human desires. Without this there would be no problems only facts.

Greed and the corruption that comes with it and religion.

God

I should add that religion plays on the greed by saying god has entitled us to this land or oil reserve.

Humans

The Rooth is humans starting cultivaring land instead of roaming Free. Read Yuval Hararis ”Sapiens”. Christian

Humanity?

Good question. I believe narrow minded self importance and greed, on the part of the few rich people who run things. I believe if there was truly equal rights and real justice, we would be alot better off here on earth.

I'm going to go for craving and ignorance but I am a Buddhist

HUMANITY!!! Not that complicated.

The human monkey. No humans...no problems.

Greed

The Ego. If people weren't ego maniacs we could stop wars, feed, cloth, and house everone, and solve all the world's problems.