The end of this era ushered in a period of "<span>B. foreign wars," since the Pax Romana had been a period of relatively unprecedented peace and prosperity for Rome. </span>
This is not answerable as there is no article attached.
Answer:
D: a revolution in Russia
Explanation:
The Bolshevik Revolution in Russia, which led many to fear that immigrants, particularly from Russia, southern Europe, and eastern Europe, intended to overthrow the United States government; The end of World War I, which caused production needs to decline and unemployment to rise.
It’s letter c for the answer of this question
