What if the largest religion in the world was a polytheistic religion?

This thread is part of a series of threads exploring the consequences of changing historical events or cultural norms: <br><br>- What if Christianity didn't get the chance to take hold in the Roman Empire? <br>- What if Christianity spread in the Middle East before Islam? <br>- What if the Zika Virus caused severe birth defects in Brazil and the world saw a surge in abortions? <br><br>----<br><br>The Roman Empire was built around polytheism, but with the rise of Christianity, the entire Roman Empire converted to Christianity, and spread it to the rest of Europe. <br><br>What if the Romans had a civil war and decided that the polytheistic pantheon is too big and is causing too many problems, and the Romans decide that the largest pantheon of gods would be 15, with 5 gods of war, 5 gods of peace, and 5 gods of nature. <br><br>What if the largest religion in the world today was a polytheistic religion and had gained a similar popularity to Christianity?