Why did England fall behind America, Germany and Japan?

(assuming this is after WWII) England was a falling empire, while japan and germany had just lost the war and were being rebiult with help from amarica, witch was sufferd little damage from WWII and infact, the war helped it built up its econimy.

Explanation:

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.