Is Christianity nothing more but Babylon Nimrod worship?

If you do research on Nimrod and his religious beliefs in Babylon you will come across a concept of a ' Trinity ', A Virgin Birth a concept of the Holy Spirit , Resurrection and a Rising of his son Tammuz. Many things Christians believe is the same what the ancient Babylons believed. This concept existed over thousands of years before Christianity came into existence. Could these concepts be where Constantine OR WHOEVER decided to add these customs to the Gospels got this from?