Candidates who hope to win their party’s nomination must .

do well in the primaries

Explanation:

The statement is related to "Presidential Nomination." If a person wants to become a Presidential nominee, he must win in the party's primaries. Here, the members vote for the person they want as a representative in the general election.

The primaries can be "direct" or "indirect." The direct primary allows the voters to decide who their party's candidate is. The indirect primary allows the voters to choose their candidate in a political convention (nominating convention).

So, this explains the answer.

doesn't make any since

explanation:

it affected it because the kingdoms (with trade) slowly got richer and richer.