Why do we have representatives who vote for us on many issues, instead of a system where individual citizens vote on each issue and law proposed?

The Number of Representatives shall not exceed one for every thirty ... U.S. Constitution, Article I, section 2, clause 3 ... After the war, the founders struggled to design a system of government to better represent the inhabitants of the new country ... delegates to the congress, and each state delegation would have one vote.

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

in all honesty, it really hasn't. except that hitler killed himself.