The surrender concluded a standoff that began with South Carolina’s secession from the Union on December 20, 1860
I'm gonna guess you said manchuria, or China, or Russia.
In which case, Japan invades China in 1937. Starting the Second Sino-Japanese War.
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
Shays rebellion exposed the weaknesses of the government under the AOC. This led many to call for strengthening the federal government in order to put down future uprisings.