After World War 1, Canada gained independence but also struggled with economic and social issues. The Winnipeg general strike of 1919 saw 30,000 workers walk off jobs demanding higher wages and collective bargaining rights. This period also saw the rise of labor unions and communist ideas which concerned the government. In the 1920s, Canada initially experienced an economic boom through trade with the US, but this prosperity did not reach all groups equally and the stock market crash of 1929 led to the Great Depression.