Answer:  The Treaty of Versailles was signed on June 28, 1919, and officially ended the war between Germany and the Allied Powers.
The controversial War Guilt clause blamed Germany for World War I and imposed heavy debt payments on Germany.
The Treaty of Versailles was a major contributing factor in the outbreak of the Second World War.
Explanation:
Its not everything but its some!! Also I'm doing this in In School Suspension 
 
        
             
        
        
        
The Decisions at the Atlantic and Yalta conferences affected the structure and purpose of the United Nations because they showed that to keep peace in countries, these countries must be stable.  It also called for freedom of elections and the right of people to choose their own leaders in Soviet Union territory, although the Soviet Union greatly opposed this.
Basically, the conferences made sure there would not be another horrific world war
        
             
        
        
        
To revive the falling economy of the Soviet Union and bring out political reforms Michael Gorbachev introduced several ideas. 
<u>Explanation:</u>
He put forward the concept of perestroika which literally meant restructure’. He intended to bring economic and political reforms within the Soviet Union.  According to perestroika he loosened control over enterprises and businesses allowing businessmen and entrepreneurs more freedom to decide prices and production amount.
In 1988 Gorbachev introduced a new policy that permitted the creation of limited co-operative businesses within the union. This led to the rise of privatization in the Soviet Union.  Gorbachev also relaxed trade restrictions and encouraged foreign investment. To ensure transparency within the government he called for democratic elections which was the first truly democratic elections since the Russian revolution in 1917.
 
        
             
        
        
        
The Provisional Government chose to keep Russian troops involved in WW1 after the Russian revolution (1917) because, having made promises to its allies in 1914, believed they should honor them. 
This resolution ultimately proved fatal. In June 1917, the Provisional Government ordered an attack on Austria, which failed. After that, people started to turn against the government. By the end of July 1917, the Provisional Government was almost powerless. 
 
        
                    
             
        
        
        
It started in the 1870's and it ended in the 1950's
Hoped This Helped