How has the Shia and Sunni split changed Islam

Despite their differences, Sunni and Shia have lived alongside each other in relative peace for most of history. But starting in the late 20th century, the schism deepened, exploding into violence in many parts of the Middle East as extreme brands of Sunni and Shia Islam battle for both religious and political supremacy.

in MY opinion i believe that the way it change Islam is that it gave the people a bad look about it. People seeing that some Muslims are causing destruction and violence makes them hate the religion and the people.

mostly one was peaceful and while the other was destruction.

btw of a website now mine so don't mark it for plagiarizing .

https://www.history.com/news/sunni-shia-divide-islam-muslim

judaism developed through the growth of a single nation of people

christianity developed through followers spreading the religion throughout the world.

explanation: