The reasons for American War of Independence are: 

• The rise of nationalism among the people of the colonies. 
• The desire for independence among the colonies. 
• The effects of the 7 years war. 
• The naval regulations. 
• Influence of writers like Thomas Paine, John Adams, Benjamin Franklin. 
• The effect of Quebec regulations and the Townsend Taxes. 
• The Boston Tea Party. All these led to the revolution in America.