NATO

The world faced immense destruction during the 19th century, primarily due to the two world wars, with WWII emerging as the deadliest conflict in human history. In the aftermath of these devastating wars, the North Atlantic Treaty Organization (NATO) was established as a military alliance among nations to safeguard against future conflicts. NATO includes 27 European countries, 2 North American countries, 2 Asian nations, and Australia, with the treaty being signed on April 4, 1949.