How are the Gregorian and Muslim calendars similar?

Both begin at important milestones based on the lives of their religions' founders

Explanation:

The Muslim calendar begins the year in which Muhammad, prophet of Islam, had to flee from the city of Mecca to Medina, due to the persecution of his adversaries and established the first Muslim community. While the Gregorian calendar takes as its starting point the year in which Jesus was born. In Christianity Jesus is the Son of God made man.

The Islamic calendar consists of 12 months similar to the Gregorian calendar. However, it consists of 354-355 days unlike the 365-366 days in the regular calendar.

The Gregorian calendar is the calendar used in most of the world. It is named after Pope Gregory XIII, who introduced it in October 1582.

Explanation:

answer; ///i believe its (b); ///the president will sign it or veto the check first good luck

a

"the land of the dead"