What are 3 new inventions that changed the United States in the 1920s? Use the sentence frame below to answer this question.

Sentence frame: Three new inventions that changed the United States during the 1920s were , and .

The war refugee board, established by president roosevelt, worked

How did government policies contribute to the beginning of the industrial revolution in great britain? o a. the british government passed laws that prevented any businesses outside the country from learning about manufacturing innovations. b. the british government established factories that produced industrial goods at low prices. c. the british government broke up joint stock companies to promote competition. d. the british government paid a large percentage of the wages earned by industrial workers.

Before the civil war, the constitution protected slavery -true -false