If a president believes that emergency conditions require a quick decision regarding an agreement with another country, which tool allows him to make a decision without senate approval? of powers?

The best answer is the state of emergency

populist movement, in u.s. history, politically oriented coalition of agrarian reformers in the middle west and south that advocated a wide range of economic and political legislation in the late 19th century. thus in 1892 their leaders organized the populist, or people's, party, and the farmers' alliances melted away.