Answer:
Learning about how the world became the way it is today is good knowledge to keep in mind. Also, taking the AP World History course can also get you some college credits, which is pretty nice in my opinion.
Answer:
Eastern Canada and large parts of the central United States
Explanation:
Christianity ends up being the most popular and it influenced politics etc
Answer:
relationship between blood flow and the heart rhythm and helped them discover how the heart works
Explanation:
its in the question