性交 OFF, the US only joined WW1 as the Germans were on their knees and only because they had started attacking US ships, In WW2 you did not join in until TWO years after the war started and only after Germany declared war on you and Russia had already started to turn the tide.
You forget that when the Japanese crippled the US fleet at pearly harbour after you IGNORED British warnings the Japs were going to attack, it was Britain and its colonies who immediately send our Pacific fleets to protect your carriers we lost THOUSANDs of people and many ships protecting American forces..
You forget it was BRITAIN and its Commonwealth troops that saved your American asses in Korea when the Comchis thrashed you and drove you into the Pusan pocket, The only forces that STOOD in rearguard to let your lot escape was the Glorious Gloster regiment who were nearly wiped out.
You talk about abusing and betraying Colonies look what you lot did to Vietnam and its people. you fought a proxy war on their land, using their people , You bombed, gassed and chemically poisoned them, then you RAN leaving them to be slaughtered.
You say we treated them bad, we gave them schools, healthcare, global commerce, road transport, railways, irrigation systems, and belatedly democracy, and if we treated them so badly why did they ALL join the Commonwealth to remain part of the British family.
Now lets look at the US and the genocide of the native Americans, the betrayal of every treaty you made with them, the lands you stole, the way you criminalised and outlawed their languages, cultures, arts, and lifestyle and forced conversions to Christianity.