The Sunni had a very big geographical influence on the world. As you can see on the map below that the Sunni were larger than the Shia by far. The Sunni make up 85% of Muslims all over the world.
This map shows where most of the Sunni and the Shia people lived. As you can see the Sunni lived in Saudi Arabia, Pakistan, India, Iraq, and Turkey. The Shia lived in Iran, Afghanistan, and parts of Lebanon and Syria.