One example is the event that led to the red scare was

The First Red Scare was a period during the early 20th-century history of the United States marked by a widespread fear of far-left extremism, including but not limited to Bolshevism and anarchism, due to real and imagined events; real events included the Russian 1917 October Revolution and anarchist bombings.

Explanation:

one of the major compromises in the constitutional convention was between the small states and big states. the small states wanted each state to have the same number of representatives in congress. the big states wanted representation based on population.