Moreover is defined as besides, also or in addition to what has been said. An example of moreover is a parent telling their teenager that, in addition to them coming home late, they also didn't do their chores. in addition to what has been said; besides; further; also: used with conjunctive force.
The depression originated in the United States, after a fall in stock prices that began around September 4, 1929, and became worldwide news with the stock market crash of October 29, 1929 (known as Black Tuesday). Between 1929 and 1932, worldwide GDP fell by an estimated 15%.
Timeline America's Great Depression is regarded as having begun in 1929 with the Stock Market crash, and ended in 1941 with America's entry into World War II. However, to fully understand the Great Depression, one must look at it in context of events that happened before and after those dates.