Serbians resented Austrians when Austria-Hungary annexed Bosnia and Herzegovina. This led to the assassination of Archduke Francis Ferdinand by Gavrilo Princip and members of the Black Hand. This would lead to conflict that began the First World War between the Triple Alliance and Triple Entente.
Answer: March 20th
Explanation: looked up
wow that was a long time ago
A.
Confederate forces took control of an important Union city.
B.
Union forces turned back a Confederate invasion of the North.
C.
Union forces cut off eastern Confederate states from those in the west.
D.
Confederate forces failed to hold on to a port city needed to receive supplies.
The delivered speech was significant because its made the Union forces turned back a Confederate invasion of the North.
The Gettysburg Address is a speech delivered by President Abraham Lincoln at the dedication of the Soldiers' National Cemetery during American Civil War.
The purpose of the delivered speech was to bring the country together (most especially the North) because they are divided by differing views of war.
So, the delivered speech was so significant because its made the Union forces turned back a Confederate invasion of the North.
Therefore, the Option B is correct.
Read more about Gettysburg Address
The United States adopted a policy of isolationism after the First World War. They had lost many men during the conflict and did not want to get involve in another war. They also had to deal with the Depression. They continued this policy until the outbreak of the Second World War.
1930's is the decade which the U.S pursed a policy of isolationism.