How did the Tang people gain the Mandate of Heaven? Song rulers grew weak and quarreled among themselves.
Arab traders took over the Silk Road trade, which undermined the Tang economy.
Tang invaders from the far north overthrew the Sui dynasty.
A Sui official led a rebellion that caused the Sui dynasty to collapse

Which option best summarizes what is expected of citizens in a domocracy?

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

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.