I'm not looking for some British apologetics, but rather why did they continue fighting when Burgoyne's army was lost at Saratoga but agreed to our independence when Cornwalis' army was lost at Yorktown. What made them decide it wasn't worth the fight anymore? What were the arguments in Parliament while the war was going on? I've heard that with the French involved that their profitable colonies in the Caribbean were at risk and the Brits considered those worth more than their North American colonies, but I want more details. Thanks.
You might try something by Lord North, the British Prim Minister at that time. He was opposed to Britain continuing the war.
Sincerely like your input. I intend on that topic being next to inquire into.