The 1920 United States census recorded that 51.2% of the population was living in urban areas. Since the census is taken only every ten years, we don't really have great data for the years in between, so 1920 is the closest we have to a year where the urban/rural split was roughly 50/50.
4.
paleontology since it is the branch of science concerned with fossil animals and plants.
Answer:
The area had fertile flood plains
Explanation:
The Indus river valley is part of these countries in modern times known as Pakistan and northwest India. the migration of the ARYAN PEOPLE started from Indus river valley because the area was a fertile plain connecting to the near east.
The Aryan people where cattle rearing people and farmers and the needed fertile plains to practice agriculture and also get good grass and water for their cattle hence the civilization/migration started from the Indus river valley for the Aryan people before getting into India
Ok wait I got this the answer would be probably c
