Answer:
Early African kingdom was known for great zimbabwe.
B, Centralized Government
It can be great if it ends an inflation since it's good against an inflation. This is what happened in the US in the 19th century when a very successful contractionary policy was implemented to end a deflation that was completely ruining the value of money and people were becoming extremely poor. It's because it reduces government spending all at once.
Answer:
Buying on margin.
Explanation:
It is factor leading to the stock market crash on Black Tuesday. Buying on margin meant that people did not pay the full price of stocks. They just paid a percentage and borrowed the money to pay for the rest of the price. In the 1920s this was a common practice based on optimism, on the belief of constant growth of the stock prices in that decade. As the stock prices kept going up, it was hoped the debt would be paid in this way. So, stock prices were overvalued and they fell precipitously when the financial bubble burst.