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.
It's A. because production is what manufacturers do to make items that they sell to the stores. Hope it helps
D) congress shall make no law respecting an establishment of religion or abridging the freedom of speech or of the press
His accomplishments is technology
