The answer is: Cities
Approximately, around 80% of united states population live in the cities. This happen because most of job opportunities that exist in united states (whether it's art, technology, or manufacturing) are located in the cities.
Because of this, even people who born in rural areas start to move to inner cities in order to find jobs and sustain their living.
Germany could no longer send or receive items from other countries through water helping the Allies with defeating the Axis.
Trade and tea and castles
The Egyptians invented hieroglyphics
Answer: The 36th division was called the Texas division because it was raised from National Guard units from Texas and Oklahoma during World War I.