When did the farmers’ alliances form the populist party, which was also known as the people’s party?

In the early 1890's, is the right answer.

Explanation:

The Farmers Alliance was an assembled agrarian economic unrest among American peasants that developed and spread in the year 1875. The campaign involved some identical but autonomous political groups. The Farmers' Alliance prompted into diplomacy in the early years of the 1890's following the standard of the People's Party, generally recognized as the "Populists."

the answer is a, salt plain

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.