Why are some presidents elected by an electoral college

Answer:

Presidential elections use the 'Electoral College' to elect some presidents instead of allowing people or Congress to elect the president directly  because the founding fathers of electoral college was afraid of direct election for electing the president. Hence, Some presidents are elected by an electoral college.

Explanation:

assessment is the missing word

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.