Which statement best explains why united states entered world war i in 1917? a) the japanese launched a surprise attack on the u. s. b) the u. s. citizens were calling for war against germany. c) the german navy had sunk the lusitania that year. d) the u. s. had evidence of a threat to its national security.

In 1917, British Intelligence intercepted what became known as the Zimmermann Telegram. This was a communication from the German government to the Mexican government that attempted to convince Mexico to declare war on the U.S. to distract Americans from getting involved in World War I. Even though Mexican President Carranza ruled out any such action, the U.S. had evidence of a threat to its national security and declared war on Germany and its allies, but not on Mexico.

answer: the unlawful use of violence and intimidation, especially against civilians, in the pursuit of political aims.

explanation: