What important strategy used by the Romans had the effect of unifying their empire? A Building a large transportation network of roads and bridges
B Using powerful navies to protect sea trade routes
C Supporting free-market economies by using silver coins
D Granting citizenship and voting rights to conquered peoples

A, building a large transportation network of roads and bridge

Explanation:

The romans used built roads to trade goods, education, religion and culture making Roman a diverse empire with different roads and bridges to make it mix society and influential.

Sorry for the argument I was a bit mad because the other user was pretty funny every question he/she was their and it was 4 times in a row, I don't think you would get mad but you did and sorry for calling you selfish. I had the answer and explanation but you guys were going off and making me feel down on my self :I, But it's all good :)

it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.