PLEASE ASAP BASED ON CRASH COURSE " THE CIVIL WAR: PART 1"
Union victory was due in part to a higher , more capacity, and more miles of track.
IF RIGHT, I WILL GIVE BRAINLIEST!!

The league of nations was found in 1919 to keep peace after world war l.but it failed to prevent world war ll in 1939,so in 1945 the nations of the world set up a new organization,the united state (un).since then, the un has encouraged international cooperation and worked to resolve conflict

Both countries had to aprove annexation.