Ineed ! how did the geography of the east african coast give rise to prosperous city-states? its location gave it access to important trade routes. nearby waterways provided natural defenses against invasion. fertile land supported large-scale farming. its climate provided for diverse economic activity.

The correct answer is A) Its location gave it access to important trade routes.

The geography of the East African Coast gave rise to prosperous city-states because Its location gave it access to important trade routes.  

East African Coast was a privileged place for trading. The direct access to the sea helped the people to establish prosperous city-states due to the continuous trading of products. Importation and exportation of gold, silver, and ivory, among others, were the daily life in those places that also made possible the access to new cultures due to the diversity of people that arrived at this territory.

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.