Wow, your question reveals a lot about you.

It's time for you to read a book, Tim, and learn. Jared Diamond's Pulitzer-Prize winning book, "Guns, Germs and Steel" answer this question and if you're able to understand the science and facts, it will blow your mind. It is not an easy read.

<<In this "artful, informative, and delightful" (William H. McNeill, New York Review of Books) book, Jared Diamond convincingly argues that geographical and environmental factors shaped the modern world. Societies that had had a head start in food production advanced beyond the hunter-gatherer stage, and then developed religion --as well as nasty germs and potent weapons of war --and adventured on sea and land to conquer and decimate preliterate cultures. A major advance in our understanding of human societies, Guns, Germs, and Steel chronicles the way that the modern world came to be and stunningly dismantles racially based theories of human history. >>

https://www.amazon.com/Guns-Germs-Steel-Fates-Societies/dp/0393317552