Select all of the factors that motivated african-americans to relocate to northern cities during the great migration.

• institutionalization of jim crowe laws

• racial tensions in industrialized regions

• increased demand for agricultural labor

• increased availability of manufacturing jobs

Institutionalization of Jim Crowe laws and increased availability of manufacturing jobs.

Explanation:

After the return to power of white democratic leaders in the South during late XIX century, local government encated laws to limit the political participation of African-Americans and also to segregate them. At the same time, Northern and Western states opened a number of job positions, specially in the steelmaker industry, where this population saw a new opportunity to leave behind discrimination in the South.

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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.