this is stipulated in Article II, Section 3 of the U.S. Constitution, requiring the President to periodically "give to the Congress Information of the State of the Union, and recommend to their Consideration such measures as he shall judge necessary and expedient."
President Lincoln's decision that the southern state governments could reorganize after 10 percent of the voters took a loyalty oath to the union.
The Supreme Court Ruling was important as it decided that free speech could only be limited if it incited harm. Ohio's law saying that group could not gather to talk about criminal syndicalism broke the 1st amendment as it didnt incite harm
The battle of Gettysburg was fought to get food for general lees men who had just been through a long winter.
It was a long and bloody struggle among several factions in constantly shifting alliances which resulted ultimately in the end of the 30-year dictatorship in Mexico and the establishment of a constitutional republic.