nMerchant travels
allowed Muhammad to observe the forces undermining clan unity
and to encounter the spread of monotheistic ideas.
nMuhammad became
dissatisfied with a life focused on material gain and went to
meditate in the hills.
nIn 610 he began receiving revelations transmitted from god via the angel Gabriel.
nLater, written in
Arabic and collected in the Quran,
they formed the basis for
Islam.