In 1914, the Mexican authorities in Tampico (a growing port  important to the oil industry) refused to offer a twenty-one-gun salute as an apology for briefly  arresting eight American soldiers for potential trespassing, which aggravated an American admiral.

1914 年，坦皮科（一个对石油工业很重要的不断发展的港口）的墨西哥当局拒绝提供 21 响礼炮作为道歉，因为短暂逮捕了八名可能擅自闯入的美国士兵，这激怒了一名美国海军上将。