BRAINLISET How did the lowland and highland regions contribute to Mayan trade? The lowland people supplied water to the highland people so they could farm.
The lowland people transported crops from the highland people for trade.
The lowland people produced crops, and the highland people produced minerals.
The lowland people produced cotton cloth, and the highland people produced food crops.

i beleive its 1)aids

because it !

an era of negotiation.

is that an answer to your question?

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.