What new technology allowed the Tigris and Euphrates rivers to become the first area in the world where civilizations could grow?

Irrigation systems

Explanation:

The advent of irrigation allowed nomadic societies to draw water from the Euphrates and Tigris to their fields and to settle into agricultural communities. by easily transporting water to their fields, they could benefit from the life-giving floods from both rivers and not have to worry food security that comes from a nomadic lifestyle

the crusades are one of the most significant events in the history of europe and the middle east.   they were a series of religious wars carried out by christian crusaders from europe during the timeframe of the middle ages.   beginning in 1095 ce, the crusades saw european knights and noblemen travel to the middle east in an attempt to capture the holy land away from muslim people that had controlled the region for the previous centuries.   the term crusade means ‘cross’.   therefore, the europeans that became crusaders viewed themselves as ‘taking up the cross’.   in fact, many of the crusaders wore crosses on their clothing and armor as they made their pilgrimage to the holy land.

explanation:

someone or something lol