In the 1920s, the US promised Phillippines independence in 1944. Keep in mind that half of the country was barely out of the stone age then, and a lot of education and infrastructure needed developed to have the have any chance of success. But we helped them establish their own government structures, a civil service, a military (that's who MacArthur, who was retired from the US Army, was training, reporting to President Quezon, when WWII broke out). The War delayed their independence for only 2 years --- to July 4, 1946. Pretty remarkable actually. It hasn't worked out perfectly there, but over the last 55 years, they have done a damn sight better than 90% of 3rd world countries.