How did the seven hills contribute to Rome's development?
A. They offered protection from enemies.
B. They helped unify Rome into one community.
C. They provided rich farmland for growing crops.
D. They had wood for constructing buildings and bridges.

The seven hills contributed to Rome's development as

A. They offered protection from enemies.

Explanation:

The seven hills were integral to the foundation of and development of Rome in the spot that it is found.

It contributed to Rome's development as a power as it offered a well defined boundary for the city and its expansion was nestled in the hill's shade making the climate well enough for farming and providing sustenance to the population if the need arise.

It created a natural barrier that smut be crossed if there ever was an attempt to sack the city which saved it thus a couple of times.

a   He was a reformer who fought for the plebeians.

a

explanation:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.