Question

What was the effect of the pilgrimage to Mecca

Answer 1

I don't really get what you mean by this question but here goes:

The pilgrimage to Mecca was called 'Hajj'.
When you go to make Hajj all of your sins are erased. It's like being born again.

Answer 2

The pilgrimage to Mecca is also known as Hajj. This is a religious even that every muslim man and women have to do at least once in their life.

The effect of going there could be finding a spiritiual attachment to god. Also by going for Hajj, all of your bad sins are erased.

Hope that helps :)