1. Why might slash-and-burn agriculture be harmful to a country's land in the long term? 2. What comparisons can you make between the Congo River in Central Africa and two of the other great rivers of the world: the Nile and the Amazon? 3. What conclusion can you make about the prevailing climate conditions in areas near the Equator? 4. How would you evaluate Central Africa's hydroelectric potential?

from the conditions of the working class in england by friedrich engels,the main idea is :

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.