Verb: revoke or annul (a law or congressional act).
Noun: the action of revoking or annulling a law or congressional act.
Answer:
Port for Texas during the Civil War
Explanation:
One of the main ways in which the United States attempted to strengthen its ties and influence with the nations of Latin America was by declaring that further attempts to colonize this area by Europeans would be met with resistance by the US--as embodied in the Monroe Doctrine.
Back in the day, all railroads company demanded more land to build more railroads on top of the existing rails. Farmers that were organized would get state and federal laws passed that would regulate the railroads.
Hope I could help! :)