When plate tectonics cause cracks to form,
a. scientists expect entire continents to fall into the earth.
b. volcanoes can occur.
c. a large rift usually remains and is never filled in.
d. most likely the country of mexico will separate from the continental united states

The answer is b. volcanoes can occur. Good luck! 

Africans learned what the europeans wanted them to learn. instead of learning about african history and current information that could and would them they learned solely what europe wanted them to. and not everyone received the same education, some received better and others none.

"the socialist system that had been in place had brought economic ruin to the country." i hope this !