Erik, I respect your smartness so much, so I'll reply abit thoroughly...
The Balfour Declaration was in 1917...
The Haganah, Stern, and Argon Zionist terrorist organizations kept making massacres with the help of British troops since 1917 until 1947, and more than half of Palestinians fled over the neighbour countries just because they were so scared from the alliance between Israelis and British troops...
USA might helped them in 1948, but they didn't make the high logistics sacrifices as provided by British...
British army trained the jewish gangs and made the core of the Israeli army later...
Britain also withdrew from Palestine early as an implementation of an agreement with Israeli terrorist gangs and gave them all the main sites it kept until that moment...
USA was nothing before 1945...Its romle started after the 1948 Nakba...
Believe me, if I'm Israeli (Thanks God I'm not), I'll worship Britain for the rest of my life, because it made me a state out of nothing when I desereved nothing and never dreamt of having such place to make stupid acts against the original people......