World War 1:
              The first world war broke out in 1914 with Britain, France,Russia on one side and germany and it's allies on the other side. It lasted for nearly five years till germany was finally defeated.It caused the human suffering and destruction. As the war ended a socialst revolution took place in russia in which peasants,workers and soldiers led by communists deposed the emperor and abolished land lordism and private owership of land and factories. They also advocated equality among nations and freedom for  all.

World War 2(1939-1945):
              Germany led by hitler and his nazi party wanted to gain control over the whole world and declare war on Britian, France, USSR and other countries. USA joined on the side of England, France and USSR. Gremany was supported by Japan and Italy. One of the worst wars in human history broke out in 1939 and lasted till1945 when USSR's armies captured Berlin and USA dropped atom bomb over Hiroshima and Nagasaki in Japan. However, in India it created a dilemma as Indians were at the same time fighting the British.
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1914Germany invades Belgium.Britain declares war on Germany.Japan joins the Allied forces: Ottoman Empire soon joins the Central Powers.War spreads to the seas.1915Women take up men's jobs.Stalemate continues on the Western Front.The Lusitania passenger liner is sunk, with 1,200 lives lost.London attacked from the air by German Zeppelins.1916Conscription for men aged between 18 and 41.A million casualties in ten months: Germany aims to 'bleed France white'.At sea the Battle of Jutland takes place.Armed uprisings in Dublin: the Irish Republic is proclaimed.1917German Army retreats to the Hindenburg Line.United States joins the war and assists the Allies.Tank, submarine and gas warfare intensifies.Royal family change their surname to Windsor to appear more British.1918Germany launches major offensive on the Western Front.Allies launch successful counter-offensives at the Marne and Amiens.Armistice signed on November 11, ending the war at 11am.In Britain, a coalition government is elected and women over 30 succeed in gaining the vote.WORLD WAR 1World War 2 SummaryWorld War 2, also known as the Second World War, was a war fought from 1939 to 1945 in Europe and, during much of the 1930s and 1940s, in Asia.The war in Europe began in earnest on September 1, 1939 with the invasion of Poland by Nazi Germany, and concluded on September 2, 1945, with the official surrender of the last Axis nation, Japan. However, in Asia the war began earlier with Japanese interventions in China, and in Europe, the war ended earlier with the unconditional surrender of Germany on May 8, 1945.The conflict spilled over into Africa, included a handful of incidents in the Americas, and a series of major naval battles.It was the largest armed conflict in history, spanning the entire world and involving more countries than any other war, as well as introducing powerful new weapons, culminating in the first use of nuclear weapons.However, despite the name, not all countries of the world were involved; some through neutrality (such as the Eire - though Eire supplied some important secret information to the Allies; D-Day's date was decided on the basis of incoming Atlantic weather information supplied from Ireland - Sweden, and Switzerland), others through strategic insignificance (Mexico).The war ravaged civilians more severely than any previous conflict and served as a backdrop for genocidal killings by Nazi Germany as well as several other mass slaughters of civilians which, although not technically genocide, were significant.These included the massacre of millions of Chinese and Korean nationals by Japan, internal mass killings in the Soviet Union, and the bombing of civilian targets in German and Japanese cities by the Allies. In total, World War II produced about 50 million deaths, more than any other war to date.