Which writer is credited with the idea that powers of government should be separated into three branches with each branch keeping the others in check

One of the main problems with the indian reservation system was that government agents took land from settlers to give to american indians. dealt dishonestly with american indian families. did not understand the power structure of american indian tribes. gave land to settlers who removed american indians.

The newly created nazi ghettos were built where? in traditionally jewish neighborhoods. in rural areas. in poor urban areas. in isolated areas to prevent knowledge of the ghettos. primarily in germany.

What kind of contact did christopher columbus and native americans initially have?