I would say it could be a and b of but probably. A.
Answer:
The Gilded Age” is the term used to describe the tumultuous years between the Civil War and During this era, America became more prosperous and saw corrupt industrialists, bankers and politicians enjoyed extraordinary wealth This enormous railroad expansion resulted in rail companies
Answer:
Civil War Begins. At 4:30 a.m. on April 12, 1861, Confederate troops fired on Fort Sumter in South Carolina's Charleston Harbor. Less than 34 hours later, Union forces surrendered. Traditionally, this event has been used to mark the beginning of the Civil War.
Explanation: