It was the constitution because they wanted to establish a better government.
One thing was that Seas were sometimes difficult to navigate which limited communication - D. this was already a factor which limited the possibility of one united Greece emergin because it made it very difficult to talk to these isolated islands that couldbe found through the difficult-to-navigate seas.
Another thing was that C - some city-states were located on isolated islands.
Many immigrants came to the United States were seeking freedom and a better surrounding. They wanted better jobs and religous freedom.
Answer: b. It was a major victory of the Civil Rights Movement and paved the way for integration.