It was the battle between the Tories and the patriots. The Tories were those loyal to King George and the British, who were usually The older generation. The Patriots were those loyal to the country, usually the younger generation. They wanted independence.
It was fought in Lexington and Concord. The events leading to the war were mostly held in this state, Massachusetts. For example the Boston Tea Party, Boston massacre, and many more.
The Battle of Lexington and Concord was fought in April 19, in the year of 1775.
It was the first military engagements of the American Revolutionary War.
It started from the Intolerable Acts, Boston Massacre, Boston Tea Party, Quartering Act, Stamp Act, Sugar Act, Tea Act, and Townshend Acts.
It was the battle in which shots were heard all around the world.
But, it's unknown of who shot first in the Battle of Lexington and Concord.