Which government was more effective, the Roman Republic or the Roman Empire?

The roman empire was more successful.

Explanation: The empires territorial gains were considerably larger. The empire was also said to last a little longer than the republic. The republic lasted from 509 BC to 27 BC and the roman empire lasted from 27 BC to 476 AD.

social status of early civilizations was based primarily on economic power.- true ( first choice)

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering