Refer to question beloiw
the battle of Karbala had a great effect on spread of shiite Islam and caused Muslims specially in understand there is two main version of Islam, Islam of Yazid and Islam of Hussain S.A.
Spread of Islam was not hindered in east africa, it reached as far as Zambia, Mozambique and further south to Rwanda
The main religion of the Swahili people is Islam. Islam spread to the Swahili coast through trade and interactions with Arab merchants, leading to the majority of Swahili people practicing the Islamic faith.
Islam spread to libya by other countries
true _____________________________________________________ It is a minor factor. Main factors that lead to spread of ISlam is its authenticity, truthfulness, and teachings that call for mankind prosperity. In addition to the fact that Islam holy book Quran had been proved that it is the last God holy book to humanity. This explains why till now many people of different faiths convert to Islam. Refer to related questions below.
A struggle or conflict to spread Islam is a Jihad
Islam never spread by war. Refer to question below.
Islam spread north at first and then spread east and west.
It was spread in Arabic.
increase trade
Same as with the spread of any religion-- people want something to eliminate their need to think, and they tend to believe whatever their parents and neighbors say
Trade routes across the Sahara desert allowed for the exchange of goods and ideas, facilitating the spread of Islam in Africa. Muslim merchants and scholars played a role in spreading the religion through their interactions with local communities and rulers, influencing them to convert to Islam.