Answer:
Nationalism was also a new and powerful source of tension in Europe. It was tied to militarism, and clashed with the interests of the imperial powers in Europe. ... Indeed, Serbian nationalism created the trigger cause of the conflict – the assassination of the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand.
Answer:
Robert E. Lee surrenders. In Appomattox Court House, Virginia, Confederate General Robert E. Lee surrenders his 28,000 troops to Union General Ulysses S. Grant, effectively ending the American Civil War.
Explanation:
I Googled it.