Question

What impact did Muhammad’s march on Mecca have?

It established the Ka’bah as a symbol of multiple religions.
It created a division between Muslims and Muhammad.
It helped to unify much of the Arabian peninsula under Islam.
It encouraged respect for the idols of several other faiths.

Answer 1

It helped to unify much of the Arabian peninsula under Islam.

Briefly: the largely bloodless conquest of Mecca led to the removal of idols from the Kaʿbah and many tribes accepting Muhammad’s authority, consolidating political and religious unity across Arabia.