The question as written makes no sense. If you mean "What was the most important Muslim scientific achievement?", see the Related Question below.
I think that the greatest achievement was art, science and technology.
The interesting achievement of the Muslim Empire led to the preservation of various prehistorical sites and led to discovery of some medicine.
In my opinion no the brazilian ronaldo is not a muslim
The Muslims invented/discovered the concept of zero.
muslim did it .
tolerance of other religions and cultures
A very big one is medicine
Astronomy was significant in ancient civilizations. In Islam, it was recognized as having scientific principles, and helped them in determining where to face the qiblah and their praying times.
Religion is very big and important in muslim life.
A mosque is a building for Muslim religious worship. It is important as a place of prayer and communal organization for the local Muslim community.
UGH just because your Muslim doesnt mean your not allowed to do anything yes for me as a Muslim its fine to use real wishes dot com My Opinion ....
name important valley in muslim world?