3. Which was one reason for the expansion of machine politics in the late 19th century?

promoting an ethnically homogeneous society through restrictions on immigration. What was one reason for the expansion of machine politics in the late 19th century? the rapid influx of immigrants made it difficult for local governments to provide basic services.

Explanation: Hope this helps you~! <\3

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.