None of the countries actually fought against WW1. America hesitated to join at first since it was made of immigrants and it could cause the empire to break apart. However, due to Germany's constant naval attacks and Zimmerman telegram, it did join. The main fear of the countries was that they would become isolated so all countries had formed allies. There was none that fought against WW1.
Italy
The US Civil War was fought against itself (brother against brother). The country of Israel fought other countries, unrelated to them.
This country was South Korea.
World war 2 started by Germany didn't like Poland so the invaded the country & no one like that so they went against Germany and he fought and fought and eventually it became a war and there already had been a war called world war 1 so this war was called world war 2
Japan emerged as a world power, but Germany was weak and humiliated
they fought against Germany
Italy
World War 1 was fought against primarily Germany.
Canada fought against Germany
China
The country was Japan, which is actually several islands.
Algeria
Depending on who you are you fought in World War 2. World War
Us fought against Italy, Germany and Japan.
The US Civil War was fought against itself (brother against brother). The country of Israel fought other countries, unrelated to them.
we fought japan,germany,and russia we had a cold war.
This country was South Korea.