Question

antebellum era (1800 - 1860)
post civil war era
modern georgia
colonial era (1733 - 1800)
era when cotton was king.

Explanation:

The phrase "Cotton was King" refers to the dominance of cotton production (fueled by slavery and the cotton gin) in the Southern US, which peaked in the decades before the Civil War. This period aligns with the 1800-1860 timeframe.

Answer:

Antebellum Era (1800-1860)