What is a good synthesis for this APUSH prompt?

In the post–Civil War United States, corporations grew significantly in number, size, and influence.
Analyze the impact of big business on the economy and politics and the responses of Americans to these
changes. Confine your answer to the period 1870 to 1900.

you probably finished this essay long ago, but the idea of synthesis is that you connect the topic to another period in history. So you would want to talk about ANOTHER time when big business made a significant impact. I’d go with the 1920s, or 2008