Which term describes the pre-Civil War, loose-knit organization that helped runaway slaves escape to Canada?

B)Underground

Explanation:

The preCivil War took place arround

year 1820 to arround year 1860 it was regarded as "antebellum years” which was among most chaotic events that took place in in American history, it's regarded as a time that symbolize significant changes which took place during the time United States came of age. There is transformation of the nation from an underdeveloped nation of farmers into an urbanized economic powerhouse. The Underground Railroad was the loose-knit organization that render some service in order to help the slaves so they can escape to the Canada, this organization make use of

Underground Railroad.

It should be noted that the term describes the pre-Civil War, loose-knit organization that helped runaway slaves escape to Canada is Underground Railroad

These are the options for the question

a. Freedmen's Bureau

b. Underground Railroad

c. Ku Klux Klan

d. Know-Nothing Party

d: their own individual powers within the new goverment

b. sec, foreign relations