Question

economic difficulties.
f give the noted events for these dates.

1. 1914
2. may 1915
3. april 1917
4. november 11, 1918

Explanation:

Each date corresponds to a key event of World War I:

1. 1914 marks the start of the global conflict.
2. May 1915 includes a major naval attack on a civilian ship.
3. April 1917 is when the U.S. joined the war.
4. November 11, 1918 is the official end of the war.

Answer:

1. 1914: Assassination of Archduke Franz Ferdinand (June 28) and the outbreak of World War I
2. May 1915: Sinking of the RMS Lusitania by a German U-boat
3. April 1917: The United States declares war on Germany, entering World War I
4. November 11, 1918: Armistice signed, ending fighting in World War I (Veterans Day/Remembrance Day origin)