What is the strongest force in the world?

I think it is Strong Nuclear interaction.

FAITH

There are four fundamental forces in the universe which account for all interactions between matter and energy. They are the strong nuclear, the weak nuclear, electromagnetic, and gravitational forces. The strongest of these is the strong nuclear force, which is100 times stronger than the electromagnetic force - the next strongest of the four forces. The strong nuclear force operates only within the nucleus of an atom and so is not experienced directly within everyday life. Its range is about1 femtometre (1x10 to the minus15 metres) and it keeps atoms together using subatomic particles called gluons.

God, Faith, Love, economy

Strong Nuclear Force 

Weak Nuclear Force

electromagnetic force

Gravitational Force 

1. Strong Nuclear
2. Faith
3. Love
4. God/Prayer

Willpower

THE  HUMAN MIND AS WELL AS HUMAN THOUGHTS ARE THE MOST POWERFUL FORCES IN THE WORLD.

There's no other strong force than the Great God !

The power of the human mind

Is the strongest force