The arrest of nine u. s. soldiers in a port city and demands for a specific mexican response damaged u. s.-mexican relations in 1914.

your definition:

On April 9, 1914, the incident called TAMPICO occurred. On this date a group of US Navy infantrymen were arrested for an hour and a half by members of the federal army that protected the port of Tampico, which ended with an invasion of Mexico. From the ship, nine crew members descended in order to buy fuel, disregarding the orders given by the Mexican authorities from the port.

democracy

explanation:

b.lincoln had the victory he wanted for emancipation