In 1854.
There was only one General Election in the Civil War - November 1864 - and Lincoln had to call his party by a different name in that election.
The event that happened last among the options provided is the end of the Spanish-American War, which concluded in December 1898 with the signing of the Treaty of Paris. The Civil War ended in 1865, the 1896 presidential election took place before the war, and Japan's ports were opened in 1854 with the Convention of Kanagawa. Thus, the end of the Spanish-American War is the most recent event.
The Missouri Compromise maintained the balance between slave and free states.
Abraham Lincoln
The American Civil War
real man
Democrat, Whig, and Republican.
Not having to face a General Election in mid-war.
Kansas experienced a civil war over an election, but it was not illegal - only declared to be rigged by cross-border terrorists from both sides.
THe civil war was resolved by death and the election of abraham licoln
The election of Lincoln as president.