Final answer:
The pro-Constitution forces during the U.S. Constitution's ratification called themselves Federalists, supporting a strong central government, in contrast to the Anti-Federalists who favored states' powers and individual rights.
Step-by-step explanation:
The pro-Constitution forces during the ratification period of the United States Constitution called themselves Federalists. They were generally the wealthy, well-educated landowners, businessmen, and former military commanders who advocated for a strong central government to enhance national defense and promote economic growth.
The Anti-Federalists, on the other hand, were those who opposed the new Constitution, fearing that it concentrated too much power in the national government, which they believed could lead to the erosion of individual rights and the dominance of the wealthy elite.
Amidst divisive opinions, the Constitution was eventually ratified, although the process led to the stipulation of adopting the Bill of Rights to appease the concerns of the Anti-Federalists about protecting individual liberties.