What exacerbated the great leap forward famine in china in the late 1950s?
question 7 options:

civil war

an increased proportion of wealthy citizens

quota systems

a shift from individual to collective farms
save

A shift from individual to collective farms.

Ithink the best answer is d increased stability of all other biomes

They contributed many things, but here are some examples:

1) democracy - democracy as a political system was first implemented in ancient athens
2) some advances in mathematics - such as the pythagoras' law
3) the script - the roman script was adopted from ancient greek.