The Korean War started when Communist North Korea invaded , in an attempt to spread Communism across the peninsula.

Question 1 options:

A. China

B. United States

C. Japan

D. South Korea

Who did the first work in creating vaccines

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.

Which european nation had the most dominant navy during world war i