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

One argument of those who supported the gold standard system in the united states was that the gold standard

Which is one reason many african nations have not prospered after gaining independence from european colonial powers? a. colonial powers sent their weakest economic advisors to the new countries, and their recommendations were flawed. b. independence left them with weak economies, and many countries have been unable to overcome or recover from these burdens. c. the desert region of the interior is inhospitable to foreign investors, and business interests focused on the coastal mediterranean cities. d. the money endowed upon independence is still tied up in the bank of england, which is hesitant to make loans to struggling nations.

The articles of confederation allowed congress to: make and borrow money. declare war. create a postal service. all of these choices are correct.