The United States in World War I (SSUSH15ac)

Unrestricted submarine warfare against civilian ships provoked the U.S.

Germany used unrestricted submarine warfare in an attempt to invade the U.S.

The U.S. developed unrestricted submarine warfare as a way to defeat Germany.

Unrestricted submarine warfare was needed by the U.S. to defend its own ports.

In the telegram, Germany promised Mexico territory it lost during the Mexican-American War in exchange for its pledge to join the German cause if the United States entered the war.

In the telegram, Germany requested Japanese assistance in capturing the US Territory of Hawaii in order to diminish the US presence in the Pacific.

In the telegram between German officials, Germany detailed its plan to sink American passenger ships its navy encountered in the Atlantic if the United States did not remain neutral.

In the telegram between German officials, Germany detailed its plan to open a new front in the war by invading US territories in the Caribbean.

They believed it would be used to promote communist ideology.

They believed it would slow the recovery of the global economy.

They believed it would draw the country into costly foreign conflicts.

They believed it would result in the loss of jobs in the United States.

Big Stick Diplomacy

Monroe Doctrine

Square Deal