Basically, Jews Britain change its support in favor of Jews because they wanted to give some of Palestine's territory to them.
If the Jews occupy the majority of that territory, it will be easier for the Britain if they wanted to expand their democratic influence towards the Middle East Region.
Well most of the concepts in these documents were prevalent in previous society's. Representative democracy in Athens. Basic inalienable rights was in the English Bill of Rights. But a big change was the checks and balances of government. i.e how the president can veto congress, the Supreme Court can overturn a veto, and Congress can impeach Supreme Court judges.
