United States Air Force Combat Control Teams, singular Combat Controller (CCT) (AFSC 1C2X1), are American special operations forces (specifically known as special tactics operators) who specialize in all aspects of air-ground communication, including air traffic control, fire support (including fixed and rotary wing close air support), and command ...
The modern stock market got its start in Europe in the late 1700s when formal stock exchanges began to appear. Although small scale trading wasn't new, there was no organized stock market in the United States until the early 1790s.
Economic historians usually attribute the start of the Great Depression to the sudden devastating collapse of US stock market prices on October 29, 1929, known as Black Tuesday; some dispute this conclusion, and see the stock crash as a symptom, rather than a cause, of the Great Depression.