There were many different reasons for the cold war, I'll only include a few.
Firstly the breakdown the the wartime alliance; Russia(soviet union) and America never got along but they both put aside their differences to fight against a common enemy, Hitler. Their hatred for Hitler kept the alliance going through the war however when Germany was defeated, they had no reason to stay friends. 
They also have different ideological beliefs. America believed in capitalism, where there was a free economy with privately owned businesses and people making profit. Whereas the Ussr believed in communism, where the economy is controlled by the state, businesses are controlled by the state and a doctor would have the same wages as a cleaner- They wanted it to be fair for people.
Stalin was angry that Britain and America kept delaying D-Day, believing it was a plot to allow Germany to weaken the Soviet Union therefore there was tension. 
Germany;
Stalin wanted huge reparations from Germany, and a ‘buffer’ of friendly states to protect the USSR from being invaded again.
Britain and the USA wanted to protect democracy, and help Germany to recover. They were worried that large areas of eastern Europe were falling under Soviet control.
It was difficult to come to an agreement.
There was resentment;
Britain and the USA could not forget that Stalin had signed the Nazi-Soviet Pact with Germany in 1939. 
The Soviet Union could not forget that in 1918 Britain and the USA had tried to destroy the Russian Revolution 
There are a few more I've missed out, but here's a good starting point.
        
             
        
        
        
Courts apply the law to specific controversies brought before them. They resolve disputes between people, companies and units of government. Often, courts are called on to uphold limitations on the government. They protect against abuses by all branches of government.
        
             
        
        
        
Affordable goods, electrical power, advertising, and credit
        
                    
             
        
        
        
Lincoln was able to enforce the Emancipation Proclamation in parts of Mississippi.
        
                    
             
        
        
        
Answer:
The Puritans in Massachusetts Bay believed in a separation of church and state, but not a separa- tion of the state from God. The Congregational Church had no for- mal authority in the government. Ministers were not permitted to hold any government office. ... Puritan lawmaking touched all aspects of life.