Why were the followers of Jesus eventually called Christians

He u.s. constitution (1787) establishes a national legislature with powers to “create national law”, a national executive with the power to “enforce national law”, and a national judiciary branch with the power to “interpret national and state policies” to see whether or not they violate the national constitution. this term describes the division of governmental authority into semi-independent bodies?

What do historians call the political,social,or cultural circumstances surrounding an event?

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?