Never put an adjective in front of the Gospel; i.e., social gospel, prosperity gospel, American gospel, etc. There is only ONE Gospel – the Gospel of Jesus Christ!
I am astonished that you are so quickly deserting the one who called you by the grace of Christ and are turning to a different gospel— which is really no gospel at all. Evidently some people are throwing you into confusion and are trying to pervert the gospel of Christ. (Galatians 1:6-7 NIV)