What is the importance of greek geography?

Mainland Greece is a mountainous land almost completely surrounded by the Mediterranean Sea. Greece has more than 1400 islands. The country has mild winters and long, hot and dry summers. The ancient Greeks were a seafaring people.

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

the answer is a) high entry costs