Answer:
The contribution is codex or codices in plural. These were folding books that served to record stories or history. They are similar to papyrus since they are both sheets and were used to record things in them. The folding books were a product of skilled scribes that were working under the patronage of gods. There are only 3 Maya codices left today because the Roman Catholic church destroyed most of them during an inquisition after they heard that the Maya were still worshiping idols.
Answer: Two Years
Explanation: Members of the House of Representatives serve two-year terms and are each year eligible for re-election. However, Senators serve six-year terms and Senate elections are distributed over even years so that only around 1/3 of the Senate is up for reelection in each year.
Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
it bans slavery