World war
A world war is "a war engaged in by all or most of the principal nations of the world".While a variety of global conflicts have been subjectively deemed "world wars", such as the Cold War and the War on Terror, the term is widely and usually accepted only as it is retrospectively applied to two major international conflicts that occurred during the 20th century: World War I (1914–18) and World War II (1939–45).
Notice :
This app is develop for education and research purpose with fair use law is apply under creative common license and does not violate the policy about Google-served ads on screens with replicated content .Fair use is a doctrine law that permits limited use of copyrighted material without having to first acquire permission from the copyright holder for education and research purpose .