Final answer:
The US Constitution derived the balance of power between the national government and regional governments from the Iroquois Confederation, as well as the concepts of checks and balances and separation of powers.
Step-by-step explanation:
The part of the US Constitution that was derived from the Iroquois Confederation is A) The balance of power between the singular national government and the many smaller regional governments. The ideas of checks and balances and separation of power within the Iroquois Confederacy impressed many of the Founding Fathers, including George Washington and Benjamin Franklin, influencing the creation of the US Constitution. The Constitution integrates concepts such as the separation of powers between the legislative, executive, and judicial branches and a system of checks and balances, where no one branch holds supreme power over the others. Additionally, the federal features of the Constitution acknowledge the sovereignty of individual states, similar to the autonomy enjoyed by the tribes within the Iroquois Confederacy.