Which direction is the Danube river from Rome

What weather system might be occurring if the pressure gradient decreases and fish harvests in peru are weaker than normal

The inner planets mercury, venus, earth, and mars were formed by

The caste system in india was used for what purpose? a) to ensure that all people had an adequate income b) to prevent the rich from taking too much power c) to provide social control and conformity according to one’s birth d) to draft a military capable of defending india from mongol invasion