In response to japans aggressive action oh the pacific in 1930s, united states

American troops were worried about cantracting in cuba a. yellow fever b. hepatitis c. polio

How did the new working class of the industrial revolution differ from the working classes of the earlier, farm based economy?

One of galileo’s contributions to science was a creating the coordinate plane system. b developing the scientific method. c improving the telescope. d inventing the astrolabe.