At the end of the Middle Ages which of the following people brought new ideas and opportunities to Europe

what are the following?

But Muslims were a big help, not sure if thats an option tho.

lol   that was   funny : >

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.