Which terrorist act was not committed by a foreigner?
a. the 1993 world trade center bombing
b. the 2001 attack on the world trade center
c. the 1995 oklahoma city bombing
d. the 2001 attack on the pentagon

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

Why are the majority of the world's economies mixed? what may happen to the "pure" types of economies (traditional, socialist/command, market capitalist) when they incorporate elements from other economic models?

What would the world be look like if we live without having news?