What year is shown on this map? how does this relate to the history of Islam?

The year is 570 CE, it shows how trade routes were really popular when Islam was spreading.

Islam appeared in the 7th century, and in the Muslim religious tradition, the rise of religion happened through Muhammad (better known in Portuguese as Muhammad). The great prophet of Islam was born in AD 570, and for much of his life he worked as a merchant.

Muhammad's life changed when he received a revelation from the angel Gabriel, in what became known in the Muslim religious tradition as the Night of Destiny. Muslims do not worship Muhammad, but they consider him to be the last in a series of prophets who brought the revelation of Allah's message.

c. troops marched forward in close formation against newer, more accurate weapons