Question

14th december 1855
dear sir, i have just returned from the kansas war (about which you have no doubt learned by the newspapers)... i intend to send you shortly a paper published here giving you a fuller account of the invasion... i will only say at this time that the territory is now entirely in the power of the free state men... i believe the missourians will give up all further hope of making kansas a slave state. tomorrow the people of kansas will decide whether to adopt or reject the free constitution submitted to them...
what major political development contributed to the violent conflict john brown refers to in his letter?
e. the relocation of native american tribes into kansas territory.
f. the supreme court’s decision in the dred scott case, denying citizenship to african americans.
g. the deployment of union troops into contested border regions.
h. the passage of the kansas - nebraska act, which allowed popular sovereignty on slavery.
reconstruction
define:

• freedman’s bureau
• sharecropping

Explanation:

The Kansas - Nebraska Act in 1854 replaced the Missouri Compromise line and let settlers in Kansas and Nebraska decide on slavery through popular sovereignty. This led to pro - and anti - slavery forces flooding into Kansas, resulting in violent conflict known as "Bleeding Kansas" that John Brown refers to.

Answer:

H. The passage of the Kansas - Nebraska Act, which allowed popular sovereignty on slavery.