Answer:
Foundational principle that is evident in the formal amendment process is Federalism.
Step-by-step explanation:
Amendment means making a change in the Constitution. The U.S. Constitution is the oldest written constitution in the modern world.
As the United States grew, it has continuously faced challenges in terms of modern warfare, alliances, and technology. So, the Framers of the Constitution added a process for amending the Constitution in Article V. Till date 27 amendments has been added to the Constitution.
The principle of federalism is seen in the process of amending the Constitution. Federalism means that the power is shared between the state government and the federal government.