Freedom is not only the principal purpose of development

but also the fundamental measure of development.Development is the extended freedom.The traditional ideas of freedom has following meaning as basic point and central issue:behavioral agent first pursue the rights in rem and achieve the subject freedom indirectly.The modern ideas of freedom has following meanings as basic point and central issue:first people pursue to obtain

to meet

to develop the right of subjects

the freedom of subjects show itself in a go-forward freedom link（voluntary preference→independent choice→free floating→self development）which is controlled by the laborers themselves.There are great correlation between freedom and prosperity

for freedom has the most powerful explainable influence on prosperity

it is the most important fundamental explainable variable and the only way for prosperity too.This is a very important history conclusion

and has widespread values to the current world and a significance of being tested.