Will mark brainliest answer!
place the events in chronological order (1-12). (the first one has been done for you.)
battle of murfreesboro
battle of gettysburg
emancipation proclamation
battle of antietam
battle of fredericksburg
first battle of bull run (1)
fall of vicksburg
battle between the monitor and the virginia
second battle of bull run
battle of shiloh
surrender at appomattox court house
battle of palmito ranch

I placed the date next to each event, and placed them in order for you:

1861

First Battle of Bull Run (1)  (July 21, 1861)

1862

Battle between the Monitor and the Virginia   (Mar 9, 1862)

Battle of Shiloh  (April 6-7, 1862)

Battle of Murfreesboro  (July 13, 1862)

Second Battle of Bull Run  (Aug 28–30, 1862)

Battle of Antietam  (Sept 17, 1862)

Emancipation Proclamation  (Sept 22, 1862)

Battle of Fredericksburg  (Dec 11-15, 1862)

1863

Battle of Gettysburg  (July 1-3, 1863)

Fall of Vicksburg  (July 4, 1863)

1865

Surrender at Appomattox Court House  (Apr 9, 1865)

Battle of Palmito Ranch (May 12-13, 1865)

answer: the ocean

explanation: if you map out 30 n and 40 n latitude, you will get the ocean

c) troops march forward in close formation against newer, more accurate weapons