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From 1820 to 1957, more than 5.5 million documented migrants arrived in the United States from other areas of the Americas. The first major wave lasted from the mid-1860s until the mid-1880s, and was mostly made up of migrants from the northern British colonies of Canada and Newfoundland. Migration from the Americas slowed again around the turn of the twentieth century, however a second wave came in the first three decades of the 1900s, with almost 320,000 documented migrants arriving in the US in 1924 alone. This wave was cut short by the Great Depression in 1929, and these numbers fell below 10,000 in 1933. Numbers remained low for the next decade, but gradually increased again through the Second World War and into the 1950s.