Here’s the matching of the events with the corresponding years:
- Sinking of the RMS Lusitania & Unrestricted Submarine Warfare - 1915
- Zimmerman Telegram intercepted - 1917
- U.S. declares war on Germany - 1917
- 18th Amendment Ratified - 1919
- 19th Amendment Ratified - 1920
- First Red Scare peaks - 1919
- Economic prosperity and consumerism begins - 1920
Note that some events may share the same year (e.g., the U.S. declaring war and the Zimmerman Telegram both occurred in 1917). The last two events can also be considered intertwined with the post-World War I context.