(Thursday, April 9, 1914) — The Tampico Incident took place today as eight U.S. sailors were arrested by Mexican authorities for allegedly entering a restricted area and held for a short time before being released in Tampico, Tamaulipas, Mexico.

Although Mexico offered a verbal apology, the U.S. demanded a more formal show of contrition; tensions escalated to the point that President Woodrow Wilson sent a naval task force to invade and occupy Veracruz, which in turn led to the downfall of Mexican President Victoriano Huerta.