What was the cultural and economic significance of Mecca?

Ancient Mecca was an oasis on the old caravan trade route that linked the Mediterranean world with South Arabia, East Africa, and South Asia. ... Mecca became a place for trade, for pilgrimage, and for tribal gatherings. The city's religious importance greatly increased with the birth of Muhammad about 570.Explanation:

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.