How did the geography of Axum help make it a trade center?

Aksum was perfectly located to become a major center of trade.

Explanation:

Merchants would travel from central Africa, Persia, India, and Egypt bringing their goods to Aksum to trade. Aksum had access to several different trade routes including major waterways such as the Red Sea, the Gulf of Aden, and the Nile River.

Trade routes in particular

Explanation:

Aksum had access to major waterways (Red Sea, Gulf of Aden, Nile River). This made it a primary place for Merchants from the surrounding areas to go.

it was certainly a debatable decision, mainly because it was based primarily on political - and not on legal or social - views. since the congress at that time was led by members of the republican party, and the territory that the tribes wanted to turn into an exclusively indian state was predominantly democratic, the proposal (as expressed in the constitution) did not succeed, but the constitution itself proved to be of crucial importance in the creation of the state of oklahoma, and, most importantly, it guaranteed the involvement of representatives of the indian tribes in the government of the future joint state.  

as a member of congress, i would have voted to ratify the constitution, or at least to have it tabled. ignoring it was an interested and partial decision.