Things like Famine, religions tensions, racial discrimination, economic disparities
The RMS Lusitania was a ship that sailed from New York and had American civilians in - at that point the US was neutral in the WWI -, when the ship came to the sight of the Irish Coast the German U-boat attacked it.
Despite the fact that Americans were horrified at the Lusitania attack, many Americans did not like the idea to enter the war, Irish Americans did not enjoy the idea of helping Britain because the country denied Ireland its independence, German Americans were sympathetic towards their ancestral homeland and Americans saw no reason to enter into a war between European powers. The US only entered war two and a half years after it started.
Answer:
It was the main cause as all great European powers wanted to spread their imperialistic and colonial power.
Explanation:
After Italy and Germany were unified European political scene was totally different. Old powers felt threatened by the rise of these countries, while on the other side, Germany and Italy, together with Austria-Hungary wanted to strengthen their role.
After the Berlin Conference it was obvious that France and Britain had dominance in the colonies, therefore the so-called Central Powers wanted to rearrange this.
Entente powers didn't wanted to change their stance and it was just a question of time when the world will begin.
Answer:
Plants ,animals , and disease between the new and old worlds
Explanation:
