Answer:
Puerto Rico became U.S. Territory in 1898, when it was acquired from Spain after the Spanish-American War.
Explanation:
The answer is:
The major industrial cities became overcrowded as workers from rural areas moved there.
and
Because of the steady increase in food production, the population nearly doubled between 1800 and 1850.
Opening statement
prosecutions case
defense case
direct examination
redirect examination
cross examination
recross examination
closing arguments
charge to the jury
The correct answer is:
An understanding of the number and size of leftover planetesimals in the early solar system.
The giant-impact hypothesis proposes that the Moon was created out of what was left of a collision between Earth and an astronomical body the size of Mars, around 4.5 billion years ago, in the Hadean eon. The heavy bombardment was a period when leftover planetesimals hit planets during the solar system's first hundred million years.
