Winnipeg grew to become the greatest grain centre on the American continent. Because of its excellent rail connections to the US as well as to eastern Canada it also became the financial, commercial, wholesale and manufacturing centre of the new West.
The town was incorporated in 1873 (after some rebellious townspeople gave the Manitoba Legislature's Speaker a tar bath). A flood of immigrants, high wheat prices, plentiful capital, and improved farming techniques contributed to making Winnipeg the largest city of western Canada. Following World War I, however, economic stagnation was caused by low wheat prices, followed by the Great Depression that lasted until 1940.
More history of Winnipeg