How did events of the 1850s lead to the collapse of the Union in 1861?

The election of Lincoln confirmed the south decision to secede as Lincoln was uncompromising on his decision about property slaves the constitution allowed Kansas to be admitted into union as a slave state.

all choices are correct

representative government

explanation:

american revolution: major events leading to declaration of independence. 1765-1766; tax introduced on legal documents to pay for defense of colonies. 1766: stamp act repealed after merchants protesting due to their goods not being bout and officials being threatened.