“era” refers to a period of time characterized by events in a chronological order.
“Period” can refer to a short interval of time or a very long interval of time.
"Turtle Bayou Resolutions were signed by settlers during the Anahuac Disturbances, which played a role in the secession of Texas from Mexico and the creation of the Republic of Texas." - Google
Floor Leaders represent an elected party. They are the main "face" or the speaker of the party that elected them.
I hope this helps!
B is the correct answer.
Hiram Rhodes Revels was the first African-American to serve in Congress, being elected to serve in the US Senate in the 1870s during reconstruction.
After reconstruction ended, African-Americans were largely exiled from public life in the South as a new era of racism took over.
