Why did the Maya use slash-and-burn farming techniques? to prevent soil erosion and water loss
to take advantage of the rich volcanic soil
to clear away the dense natural vegetation
to make use of the large sources of fresh water

Which of the following was an effect of allied defeats and high casualty rates on the eastern front? the united states issued the fourteen points. russia entered the war on the allied side. the united states entered the war sooner. russia experienced a revolution and dropped out of the war.

Why did federalists fear the louisiana purchase? what did they think would happen?

What was the code name for the d-day invasion?