It was the Battle of Manassas (also known as the Battle of Bull Run) that was the first major Civil War battle were heavy casualties occurred, since this took place only months after the war began.
I'm pretty sure it's false.
The open door policy allowed mass immigration from foreign countries of Japan.
One of the main reasons why states and politicians still choose to be aggressive towards others is because those states and politicians are corrupted. They are corrupted by the want for power and seek to become the most powerful leader. It is because of this that they harm others to seek their own personal gain.