2. which best describes why ancient city-states of athens and sparta developed different political
systems? [2.1] [1; l2]
a. the roman empire dictated government policies.
b. foreign travelers introduced new philosophies.
c. the mountainous geography kept poleis isolated.
d. for over three centuries, civil wars raged in cities.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.

Dbecause i feel like that’s the correct answer