Final answer:
The "Global City" of the Northeast US Megalopolis Region is New York City, known for its economic dominance, historical growth, and extensive infrastructure, which includes Wall Street and the United Nations.
Step-by-step explanation:
The city commonly referred to as the "Global City" of the Northeast US Megalopolis Region is New York City. This region extends from Washington, D.C., to Boston and is often called the Northeastern Core. It serves as the economic heart of the United States and is home to numerous corporate headquarters, financial markets, such as Wall Street, cultural institutions, and global organizations like the United Nations.
New York City's status as a global city is underpinned by its exceptional history of growth and development, dating back from the 19th century when it surpassed other East Coast cities like Boston and Philadelphia by developing transportation advantages such as the Erie Canal. This enhancement in infrastructure, alongside its port on the Atlantic Ocean and the navigable Hudson River, catapulted New York City to the forefront of trade and industry, ultimately allowing it to become one of the largest cities in the world at that time.
This sprawling megalopolis consumes vast quantities of natural resources and remains a growing part of the U.S. landscape. Beyond its economic prowess, the region has a significant impact on the environment, demanding careful consideration about sustainable development and natural resource management.