The New York Times

LUSITANIA SUNK BY A SUBMARINE, PROBABLY 1,260 DEAD;
TWICE TORPEDOED OFF IRISH COAST: SINKS IN 15 MINUTES:
CAPT. TURNER SAVED. FROHMAN AND VANDERBILT MISSING;
WASHINGTON BELIEVES THAT A GRAVE CRISIS IS AT HAND

4. According to the newspaper headline, which event most influeneed the United States President
Wilson's decision to enter World War ?

A. A revolution in Russia

B. The assassination of Archduke Franz Ferdinand

C. The renewal of unrestricted submarine warfare by Germany.

D. The raids by Mexican guerilla forces on the Southwestern United States.