This (#35 on the map) was the bloodiest single day battle of the war, after which Lincoln issued his Emancipation Proclamation in January, 1863.
 *Antietam
 Bull Run
 Manassas
 Gettysburg
 Shiloh

This (#36 on the map) was the first pitched battle of the Civil War after the surrender of Fort Sumter.  It was a Confederate victory, but also a lost opportunity as the South failed to follow up their success and march on  Washington D.C.
 Antietam
 *Bull Run
 Sharpsburg
 Gettysburg
 Shiloh

In this 1862 battle in the West (#37 on the map), more soldiers died than in all of the United States losses in wars up to that time?  (There was also a song named after the battle which you heard in the video.)
 Antietam
 Chancellorsville
 Sharpsburg
 Gettysburg
 *Shiloh

Area #3 on the map indicates the initial discovery which became one of the West's major industries during the 19th Century.
 *gold - mining
 silver - Treasury Deparment/federal government expansion
 longhorn cows - ranching
 wheat - farming
 none of the above