This storyboard does not have a description.
Germany sank the Lusitania of the United Kingdom on May 7th, 1915, killing 114 Americans.
Germany practiced "Unrestricted Submarine Warfare" - a tactic in which submarines sink ships without warning that approach their waters.
The Sussex pledge was a promise by Germany not to sink unarmed ships and to ignore passenger ships.
The Zimmermann Telegram from Germany proposed a military alliance between Mexico and Germany if the US joined the war against Germany
The United States of America enters WWI.
Explore Our Articles and Examples
Try Our Other Websites!
Photos for Class
– Search for School-Safe, Creative Commons Photos (It Even Cites for You!
– Easily Make and Share Great-Looking Rubrics