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.
The two executive powers that the constitution delegates to the senate are the power to confirm presidential appointments and the power "advice and give consent on treaties" formulated by the President.
