Although this remains a highly contested question, most historians agree that the alliance system made the outbreak of World War I somewhat inevitable, since each state had to come to the aid of at least one other state. Although this does not explain why it lasted as long as it did.<span />
Answer: In primaries, party members vote in a state election for the candidate they want to represent them in the general election. After the primaries and caucuses, each major party, Democrat and Republican, holds a national convention to select a Presidential nominee. ... On election day, people in every state cast their vote .
Explanation:
The correct answer is continental drift.
Number 1,3 are correct but number 2 is letter A