Question

"The ancient Greeks developed the concept of participatory democracy, but they also practiced slavery, denied political rights to women, and __________."

*Which phrase best completes the sentence above?

a- wars of conquest.

b- waged wars of conquest.

c- were waging wars of conquest.

d- were a people who waged wars of conquest.

Answer 1

b) waged wars of conquest. This is because everything else is written in the past tense, so only choice b would work.
choice d is just a waste of words.