Because mainland Britain was too far. It took too long to get messages from America to Britain and then back again in those times.
Britain was also running a huge empire, the largest empire the world had ever seen, so troops were also needed in other parts of the world to maintain the order in the empire.
By a unilateral declaration of independance and by fighting a war to enforce that declaration.
Because this is when Britain and America was fighting for independence. Britain were putting taxes on alot of things and America wanted to be free. America after they won the war they made the Declaraton of Independence.
Germany, Japan and Italy fought against Russia, Great Britain and America.
Britain was fighting with France in World War 2.
In Europe, Britain was fighting against Germany. In Africa, Britain was fighting Germany, Italy, and a few forces of the puppet Vichy France. In the Far East, Britain was fighting Japan in China, Indonesia, New Guinea, Burma and Indochina.
Fighting in the frontier was the exact cause that lead to war with Britain. These two groups just could not agree.
Germany. Japan were last to surrender. Italy gave up half way through fighting in war with allie, America & Great Britain.
Britain did not help America win the Revolutionary War.
The two countries came to war in 1775-1783 in the American War of Independence when the American colonies wanted to become independent. They were at war again in 1812-1815 after America declared war on Britain (and Canada) over reasons such as British support for the indigenous population who were being wiped out. The real reason however was to try and grab Canada from Britain like they later stole California and Texas and Hawaii. America lost 2,200 men.
The United States of America gained independence from England after fighting the revolutionary war.
The war started when America and Britain had two people who were great friends.The British friend unwittingly got into the trap of friendship and lost his capacity of what is needed for his country and brought his country to bankruptcy.That is why Britain is fighting in Afghanisthan and is not able to withdraw because of false prestige, putting in danger his troops for a war created by vested interests.
Britain entered the fighting World War I after the German invasion of Belgium.