The correct answer is D) The size and number of major US cities increased.
The major population trend that occurred in the US during the Industrial Revolution was "The size and number of major US cities increased."
With the advent of the Industrial Revolution, many things changed. Indeed, the Industrial Revolution changed the life of many people.
Farmers that used to work in their farm fields decided to leave the rural areas of the country to move to the larger cities where the big industries and factories were located. Immigrants also arrived because they were looking for better living conditions.
That is why the larger cities saw an increase in population. These workers labored for long hours under unhealthy conditions and lived in overcrowded spaces where disease quickly spread.
The Articles of Confederation gave the states way too much power and the federal government not enough power. The Constitution gave the federal government more power an reduced the power of the states.
During the Cold War, the world feared the devastation that
nuclear weapons could cause so the United States, Great Britain, and the Soviet
Union signed the Limited Test Ban Treaty.
To add, t<span>he Cold War was
a state of geopolitical tension after World War II between powers in the
Eastern Bloc and powers in the Western Bloc.</span>