Originally developed in 1935, what radio-based detection and ranging
system was improvised during World
War II to track air planes?
A. Radar
B. Sonar
C. Laser

Which best represents the view of the southern delegates at the constitutional convention

The 20th amendment, also called the lame duck amendment, decreased the amount of time between the presidential election and the inaugration of the new president. what are the advancements that allowed for this amendment?

True or false: after the bonus army demonstrated around the capitol and lobbied senators, the senate passed the bonus billwhat did fdr speak to the american people about in his first fireside chat? how did the new deal assist workers? select all that apply.a, by funding public works projects b. by mandating an eight-hour dayc, by guaranteeing an income raise for alld, by guaranteeing a higher stock market