The First Opium War (1839-1842) erupted from tensions between China's Qing dynasty and British Empire. The British sought to balance trade imbalances through opium sales, which China fiercely opposed. The war ended with China's defeat, forcing them to cede Hong Kong, open trade ports, and pay reparations.
The Second Opium War (1856-1860) saw Britain join forces with France against a weakening Qing dynasty. Similar to the first war, Western powers aimed to expand trade and influence in China. Incidents like the seizure of a British ship by China sparked military action. The war concluded with the Treaty of Tientsin, further opening China to foreign powers and legalizing opium. This conflict highlighted the unequal power dynamics between China and the West, impacting China's relationship with Western nations for years to come.
Following World War I, the victorious Allied Powers met to decide Germany's future. Germany was forced to sign the Treaty of Versailles, under which Germany had to accept guilt for the war and to pay reparations, lost territory, and was prohibited from having a large military. The humiliation faced by Germany under this treaty paved the way for the spread of Ultra-Nationalism in Germany.
An international organization set up in 1919 to keep world peace, with the intention that all countries would be members and disputes between countries could be settled by negotiation rather than by force. The League of Nations was a good idea, but ultimately a failure, as not all countries joined the league and it had no army to prevent military aggression.
The worldwide economic depression of the 1930s took its toll in different ways in Europe and Asia. In Europe, political power shifted to totalitarian and imperialist governments in several countries, including Germany, Italy, and Spain. In Asia, a resource-starved Japan began to expand aggressively, invading China and maneuvering to control a sphere of influence in the Pacific.
A wave of nationalistic, militaristic totalitarianism that promised to minister to peoples' wants more effectively than democracy and presented itself as the one sure defense against communism. Benito Mussolini established the first Fascist, European dictatorship during the interwar period in Italy in 1922.
Adolf Hitler, the Leader of the German National Socialist (Nazi) party, preached a racist brand of fascism. Hitler promised to overturn the Versailles Treaty, restore German wealth & glory and secure additional Lebensraum ("living space") for the German people, who he contended deserve more as members of a superior race. In 1933 Hitler became the German Chancellor, and in a series of subsequent moves established himself as dictator. In 1941 the Nazi regime unleashed a war of extermination against Slavs, Jews, and other elements deemed inferior by Hitler's ideology.
Although Britain and France knew of Hitler's actions, they thought a stronger Germany would stop the spread of Communism from Russia. An example of appeasement was the Munich Agreement of September 1938, where Britain and France allowed Germany to annex areas in Czechoslovakia where German-speakers lived. Germany agreed not to invade the rest of Czechoslovakia or any other country. However, in March 1939, Germany broke its promise and invaded the rest of Czechoslovakia, and neither Britain nor France was prepared to take military action.
The major causes of World War II were numerous. They include the impact of the Treaty of Versailles following WWI, the worldwide economic depression, failure of appeasement, the rise of militarism in Germany and Japan, and the failure of the League of Nations.
Victors' stated aims in World War I had been "to make the world safe for democracy," and postwar Germany was made to adopt a democratic constitution, as did most of the other states restored or created after the war. In the 1920s, however, the wave of nationalistic, militaristic totalitarianism known by its Italian name, fascism, emerged.
Hitler openly denounced the TreatyofVersailles and began secretly building up Germany's army and weapons. Although Britain and France knew of Hitler's actions, they thought a stronger Germany would stop the spread of Communism from Russia.