Final answer:
The direct outcome of the Anti-Federalist's activities was the push for the inclusion of a bill of rights in the Constitution.
Step-by-step explanation:
The direct outcome of the Anti-Federalist's activities during the years 1788 through 1791 was the push for the inclusion of a bill of rights in the Constitution. The Anti-Federalists, who opposed ratification of the Constitution, believed that it gave the national government too much power and threatened individual rights. As a result of their activities, several states made the passing of a bill of rights a condition of their acceptance of the Constitution.