Most anthropologists believe that the migration process of the native Americans across the present-day Bering Strait was completed around

The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

Most anthropologists believe that the migration process of the native Americans across the present-day Bering Strait was completed 15,000 years ago.

Historians and anthropologists agreed that migration through the Berin Strait started approximately 30,000 years ago when the first humans from Asia crossed the Berin Strait that was frozen at that time due to the extremely cold temperatures. They came from Siberia to America by crossing what is formally known as the Berin Land Bridge.

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.  

after the french-indian war.