The ancient Roman and Greek civilizations had well-organized political processes that greatly influenced the manner in which later governments were structured in Europe and the United States. The system of political parties, the establishment of divisions in government -- even political words such as democracy, monarchy and tyranny -- originated in ancient Rome and Greece. Although Rome drew many of its political principles from the Greeks, and as a result, developed a government similar to that of Greece, there were several differences between the two.
labor unions fought for better wages, reasonable hours and safer working conditions. The labor movement led efforts to provide aid to workers who were injured or retired.
I know that one of them was the stock market crash that occurred on Black Tuesday, October 29 in the year of 1929, and that was one of the major causes that led to the Great Depression.