Most likely the main reason that the Aryan's gave up their nomadic lifestyle was because: Early nomadic conflicts made it impossible to sustain population growth.
Tensions which arose among new arrivals.
They found rich silt for crops along the Ganges.
The female population was on the decline.

Do humans change their physical environment to adapt or do humans adapt themselves to their physical environment?

The president has what role as the head of the armed forces 1.commander 2.general in chief 3.commander in chief 4.chief petty officer 5.joint chief

Instead of being thirteen republics, under a federal head, [the federalists’ plan] is clearly designed to make us one [unified] government. . whether such a change can ever be [made] in any manner; whether it can be [made] without convulsions and civil wars; whether such a change will not totally destroy the liberties of this country—time only can determine. –the federal farmer what best summarizes the point of view the excerpt expresses? in time, one unified government will run the country. the federalists prefer thirteen republics to one unified government. one unified government probably will not lead to disruptions and civil wars. under one unified government, people will be robbed of their freedoms.