I'll answer just your first question. On Brainly, it's good to post separately for each question you have.
In the 1920s, people were so eager to invest and earn profits through the stock market that they bought stocks "on margin." In other words, they paid for only a marginal percentage of the stocks with their own funds, and borrowed bank funds for the rest of the purchase. By the late 1920s, 90% of the purchase price of stocks was being made with borrowed money. This inflated the market in a way that spiraled out of control, and in 1929 the market crashed.
In response to the market crash and the beginning of the Depression, the Smoot-Hawley Tariff (officially the Tariff Act of 1930) tried to protect American jobs by imposing heavy tariffs on imported goods. But what this did was to provoke other countries to impose their own tariffs as a response. As a result, world trade was greatly diminished and the Depression spread globally.
At the stroke of midnight on June 12, 1910, Oklahoma Gov. Charles N. Haskell signed a document declaring the capital of the 2-year-old state was now in Oklahoma City, and the state seal was whisked out of Guthrie for a "wild 30-mile automobile ride" to the new capital.
The chief features of the Bretton Woods system were an obligation for each country to adopt a monetary policy that maintained its external exchange rates within 1 percent by tying its currency to gold and the ability of the International Monetary Fund (IMF) to bridge temporary imbalances of payments.