3. Which city relied on the Tigris and Euphrates Rivers for water? 1) Ankara 2) Baghdad 3) Cairo 4) Riyadh

2)  Baghdad

Explanation:

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

d. hip hop

it was originated in the 70s while the harlem renaissance occured in the 1920s