The term 'mid-1800s' refers to the period between 1850 and 1865.
Related terms
Industrial Revolution: A period of rapid industrialization and technological advancements that transformed manufacturing processes and had far-reaching social and economic effects.
Manifest Destiny: The belief prevalent among Americans during this time that it was their destiny and duty to expand westward across North America.
Abolitionist Movement: Social reform movement aimed at ending slavery in the United States.