it changed all the government and changing lots of things in the nation.
The war prompted significant changes in government in Russia and Germany due to widespread dissatisfaction with the existing regimes. In Russia, the immense suffering and losses during World War I led to the 1917 Russian Revolution, resulting in the overthrow of the Tsarist autocracy and the rise of the Bolsheviks. In Germany, the war's devastation and economic hardship fueled unrest, culminating in the abdication of the Kaiser and the establishment of the Weimar Republic. Both countries experienced a loss of legitimacy for their ruling authorities, leading to radical shifts in their political landscapes.
The Tsarist government fell, because Russia was losing heavily to Germany. The revolution that caused it to fall led first to a moderate and multi-party Government. But Russia still refused to surrender to the Germans. Then the Germans got Lenin to travel to Russia in the hope that he would cause the moderate Government to fall, which he did through the October revolution of 1917. The Bolsheviks then took over and ended the war with Germany.
The Tsarist government fell, because Russia was losing heavily to Germany. The revolution that caused it to fall led first to a moderate and multi-party Government. But Russia still refused to surrender to the Germans. Then the Germans got Lenin to travel to Russia in the hope that he would cause the moderate Government to fall, which he did through the October revolution of 1917. The Bolsheviks then took over and ended the war with Germany.
Suspicion of Germany's autocratic government
the fear of communism--leaders in Germany and Italy had seem what Communism had done to Russia, with the Red Terror and Stalin and everything. They needed a way for the government to control capitalism more directly because of their failing economies caused by post-war stress. The two options were Communism and Fascism, and Italy and Germany chose Fascism out of fear of turning into another Russia.
Suspicion of Germany's autocratic government
The introduction of the new currency in West Germany alarmed Stalin, as he was worried by the idea of a successful, anti-communist government in the west of Germany. Furthermore to him this raised the possibility of another German attack on Russia, as in 1914 and 1941.
Stalin, Churchill, and Roosevelt decided on the postwar division of Europe at the Yalta Conference. For that reason, American forces ended their advance at the Elba River, leaving Russia to take Berlin. In essence, this gave Russia control of East Germany which fell in the Soviet sphere, and the Western Allies (Britain, France, and the US) divided West Germany.
Primarily Germany's naval challenge to Britain from 1900, leading to the Triple Entente of Britain, France & Russia.
The Potsdam Conference. Russia, the UK, the US and France divided up Germany for its administration and occupation.
They had alliances with countries that were involved.
The assassination of Austrian Archduke Ferdinand was the immediate cause of World War I. He was killed by a Serbian terrorist, which caused Austria to declare war on Serbia. Serbia was allied with Russia, who intervened, causing Germany to declare war on Russia, which caused France to declare war on Germany.