In the 1920s, Canada set up a successful wheat marketing "pool" to keep prices high. Canada negotiated with the United States, Australia, and the Soviet Union to expand the pool, but the effort failed when the Great Depression caused distrust and low prices. thumb|left|I'm Alone, a Canadian ship used to smuggle alcohol across the border during the alcohol prohibition era in the United States With prohibition underway in the United States, smugglers bought large quantities of Canadian liquor. Both the Canadian distillers and the U.S. State Department put heavy pressure on the Customs and Excise Department to loosen or tighten border controls. Liquor interests paid off corrupt Canadian border officials until the U.S. finally ended prohibition in 1933.
In the 1920s Canada set up a successful wheat marketing "pool" to keep prices high Canada negotiated with the United States Australia and the Soviet Union to expand the pool but the effort failed when the Great Depression caused distrust and low prices thumb|left|I'm Alone a Canadian ship used to smuggle alcohol across the border during the alcohol prohibition era in the United States With prohibition underway in the United States smugglers bought large quantities of Canadian liquor Both the Canadian distillers and the US State Department put heavy pressure on the Customs and Excise Department to loosen or tighten border controls Liquor interests paid off corrupt Canadian border officials until the US finally ended prohibition in 1933