This is a typical ploy of deception -- create something new and label it with the name of your opponent.
Sort of like saying Arminius was a Calvinist.
Postmillenialism is simply a belief that the spread of the Gospel and the fulfillment of the Biblically-mandated Great Commission will enrich our society and profit all who hear it.
It sure can't hurt.
Christian Reconstructionism simply says the Great Commission is our responsibility to perform, by the grace of God.
And before the world become so skittish and politically-correct, most Christians actually believed in both presuppositions.
"And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world." -- Matthew 28:18020"So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it." -- Isaiah 55:11
Why do we really fight in Iraq, x? Yes, it's for U.S. defense and protection and stability.
But don't you also believe that the spread of Christianity to a Muslim nation will truly benefit that region?
Don't you also believe that all those Bibles being smuggled into China will truly benefit that continent and enrich the lives of all who hear the word of God?
What is a pelagian?
What is a semi-pelagian?