Almost wrote this post off as drivel by a religious troll. However, you are young, and perhaps still working out why being agnostic and/or atheist is more rational than religious delusion. ATM you get the benefit of doubt from me. I hope writing this comment is not a waste of time, effort and database.

If you had studied science, you would know the Bible's timeline is totally messed up. The people who wrote it were ignorant. For example, somewhere in the old testament (I'm not a bible scholar who can quote it) the bible says something about the stars falling from heaven. Today we know the size of stars with good accuracy. Our star, the Sun, which is a smallish star, is roughly a million times the size of Earth, and the largest stars are about 300 times as large as the Sun. The Universe is almost 14 billion years old, and the Earth roughly 4.5 billion years old. Thus, your saying, "According to the Bible, the Earth is not that old" makes your education Biblical, and possibly makes you a religious troll. On the other hand, your question about native Americans puts you in the thinking group.

The answer is that the Bible was written several hundred years after Christ supposedly died, and before the discovery of the Americas. There are several thousand indigenous religions, including those of native Americans, and none mention or mimic the Bible. Those indigenous religions developed independently from the Christian myths, so they are different.

Is that what goes for free thinking around here ?