Military conquest, and destruction of local religions.
Islam began to spread in Africa in the seventh century, the same century in which Quran revelation by God to Prophet Muhammad started.
Islam started in the seventh century CE.
Islam and Christianity.
Islam.
ISLAM
To allover the world; from west to east and from north to south. Prior to the 20th century, the farthest westward that Islam had spread was Morocco and Mauritania.
Islam did not exist during the Old Stone Age, as it emerged in the 7th century AD. The Old Stone Age refers to the period between 2.6 million and 10,000 BC, while Islam originated in the Arabian Peninsula in the 7th century AD. Therefore, there was no spread of Islam during the Old Stone Age.
The seventh paradise in Islam is Jannatul-Kasif
Islam began in the seventh century C.E. I don't know how this might explain the religion's internal conflicts.
Islam spread to libya by other countries
A struggle or conflict to spread Islam is a Jihad
Islam never spread by war. Refer to question below.