The correct answer to this open question is the following.
I think the U.S. backed down on its enforcement of the Treaty once gold was discovered in the Black Hills because the United States federal government had already signed and formalized the Treaty of Laramie in 1868, in which the government recognized that region of Black Hills as a territory of the Sioux Native American Indian tribe.
Let's have in mind that although large gold deposits were found in 1875 in Deadwood Gulch, Black Hills territory and thousands of people went there to find fortune, the territory already belonged to the Lakotas and the Sioux.
A) social reform
The antebellum period generally refers to the time period before the civil war and after the War of 1812 and most likely magazines would focus on the movement of the upcoming war of that time.
Germany does not cede all of Alsace-Lorraine to France but instead the two split the territories based on Language, Ethnicity, Culture, etc.
Germany keeps Danzig and the Corridor but must grant Poland her Sovereignty and the Gdynia enclave. Poland gets Economic and Commercial Rights in Danzig and Polish citizens are allowed to reside.
3. No War Clause Guilt for Germany since Germany did not start the war but only mobilized to protect their Ally Austria-Hungary who actually partly caused the war.
