Final answer:
The U.S. Constitution is a seminal document because it has shaped the national character of our country and serves as a blueprint for how our government operates.
Step-by-step explanation:
The U.S. Constitution is a seminal document because it has shaped the national character of our country. It serves as a blueprint for how our government operates and incorporates ideas that have worked for other governments in the past, as well as new and uniquely American ideas. The Constitution outlines the principles and ideas that are the foundation of the United States of America.