Which theory states that sun is the center of the universe?

solar theory
heliocentric theory
geocentric theory
geography theory

The answer is  the Heliocentric theory.

Explanation:

This theory argues that the sun is the central body of the known solar system. It disputed the main tenets of the Geocentric theory (the Earth as the center). Also:  heliocentric, from old Greek (helios, the sun).  

the answer is jerusalem

ghana achieved independence peacefully, while algeria gained independence through an armed struggle.