The right answer is: The Americas :)
Answer:
Zheng He was important because: (C) He led seven overseas explorations.
Explanation:
As an admiral, explorer, eunuch, diplomat, and trader, Zheng He led China to become the superpower of the Indian Ocean, considered to be “the world's most important crossroads of trade”, in the 15th century.
It’s B I’m pretty sure hope it’s right
The domino theory is the theory that if one country was to fall to communism then the rest of the countries in the region would fall
Because I'm not sure what text you're referring to, I can only talk on what I know about Galileo. Because he created the telescope and was able to provide more legitimate evidence to support Copernicus' Heliocentric Theory, he began proving that some of the Church's teachings were not correct. This was deemed heresy (to go against the belief and teachings of those around you in a way that seems like betrayal rather than freedom of thought)