The letter is C I’m pretty sure
Answer:The assassination of Archduke Franz Ferdinand of Austria-Hungary.
ahem ahem-
SPEAK ENGLISH OR NO ONES GOING TO BE HELPING YA
The Declaration of Independence.
1. Alexander Stephens
2. Border States
3. West Virginia
4. Fort Sumter
5. Jefferson Davis
6. Robert Anderson
7. South Carolina
8. Crittenden Compromise