Final answer:
A total of 79 years passed from Muhammad's death in 632 until the beginning of Muslim rule in Spain in 711.
Step-by-step explanation:
The time interval from the death of Muhammad in 632 until the commencement of Muslim rule in Spain is 79 years. After Muhammad's death, Islamic conquests expanded rapidly under the leadership of successive caliphs. In 711, Muslims crossed into Spain, initiating a period of Islamic rule that would last for centuries.
Spain became a Muslim land in the year 711 when the Berber general Tariq ibn-Ziyad led the Islamic conquest of the region. This conquest was a key moment in the spread of Islam, marking the religion's reach into Europe. Therefore, counting from 632 to 711, a total of 79 years had passed from Muhammad's death until the establishment of Muslim dominance over the region.
The Prophet Muhammad died in the year 632. The Islamic conquest of Spain took place in 711. Therefore, the number of years that passed from the death of Muhammad until Spain became a Muslim land is: 711 - 632 = 79 years.