It would be "Whether a new state or territory should enter the Union as Free or Slave" that had the most impact on the Civil War, since the North was strongly against the spread of slavery, while the South was in favor of it.
The ninth president was William Henry Harrison. He became president in 1841 and served for just a month before dying of pneumonia.
The concept that completes the fragment is Cross-voting.
Cross-voting is a form of voting in which the elector has the right to vote differently in elections. Cross-voting allows the voter not to favor a single party but can vote for two different parties during an election.
For example, a voter leans for a state government candidate who belongs to the Democratic party, while at the national level he leans for a Republican candidate. He votes for each of them, this is known as a cross vote.
According to the above, the fragment would look like this:
Voting for one party on a state level and the opposite party on a national level is known as Cross - voting.
Learn more about elections in: brainly.com/question/1657299
The answer is England. William the conqueror established Norman rule in England and became the first King of England
Answer: B) False. The answer is B.
