The greeks performed rituals because

The Greek sanctuaries as places of communication through rituals, the ancient Greeks performed many rituals in the observance of their religion.

Some rituals, such as reciting prayers, were simple. Others, such as animal sacrifices, were very elaborate.

The sacrifices, the most important of the ancient religious rituals, were offerings to the gods.

In the ancient Greek religion, performing a ritual according to tradition and specific custom was crucial. Otherwise, the act does not make sense. Therefore, preserving rituals and passing them from one generation to another became an important social function.

mesopotamian code of hammurabi

and i think its 1860 b.c. you mean lol

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.