In order to understand global history, you have to be able to understand how religions and belief systems influence people.
Check out the Incredibly Detailed Map of the World's Religions.
We respect other people's beliefs, even when we don't believe in the same thing.
Below, you will see a video about Confucius. We don't talk about him too much but he might be on the Regents, and he's had a big impact on China, so take a look:
Here's an even cooler pie chart diagram.