Which of the following sentences best describes the Progressive Era?

It was a period in which many social reforms occurred.

It was a period of unchecked abuses by big business.

It was a period of civil war and the end of slavery.

It was a period of westward expansion under the idea of manifest destiny

It was a period in which many social reforms occurred.

Explanation:

The Progressive Era was a period of reform in the history of the United States that spanned approximately from the 1890s to the 1920s. Antitrust laws, Dry Law, female suffrage and federal income tax arose during this time., like many of the social reforms that shape the way we live and work today.

It was a period in which many social reforms occurred.