The correct answer is Option A) To help foster peace and economic collaboration among European nations.
After the almost subsequent devastating wars of World War I and World War II, Europe's social and economic fabric has been completely destroyed.
From small countries such as Poland to larger countries such as France and UK, every country suffered greatly loosing millions of people.
After the 1945, European government started to devise a way to become of a 'club' that would encourage trade, travel and social exchanges between all European countries.
The idea was to create an excellent relationship between all countries so that a World War is never repeated.
Today, this has manifested itself in the form of a European Union and even the single currency known as the Euro.
Countries that sided with Germany in World War 2 was Italy, Japan, and most people don't know but Sweden did trade with the Germans during world war 2. Sweden did not partake in ww2 but they continued trade with the Germans, Italy joined the war because they sought out land and colonies, Germany wanted to undo what the treaty of Versailles did and japan wanted to rule the pacific. The United States sided on both wars with the Entente who helped France and Russia fend off against Austria-Hungary and Germany. The United States joined after the Sinking of the Lusitania.
The first sino Japanese war resulted in Japan invading Korea ( I had to make it longer )