Which new invention was the least useful to farmers?

thresher

reaper

steel-plow

sewing machine

The expansion of the railroad networks led to

What requirements were placed on germany in the treaty of versailles? (choose 3) question 2 options: give up 1 million square miles of land cease the development of the nuclear bomb limit the size of its armed forces pay reparations to other countries export food to countries most damaged by the war claim shared responsibility for the war with the united states

Ineed this now complete the paragraph about social darwinism. social darwinism to justify by suggesting that it is natural and acceptable for powerful and wealthy nations to colonize regions that are less powerful. used this theory to justify the practice of political, economic, and cultural colonialism.