26. The significance of the Lincoln-Douglas debates was that (a) Douglas failed to be reelected Senator (b) the Missouri compromise was repealed (c) Lincoln supported the doctrine of popular sovereignty (d) Douglas lost the support of the South for the Presidency

I think it's D

Explanation:

The Lincoln-Douglas debates were presidential debates so the only answer that related to becoming president is D

the answer is false.

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.