Original: The blockade was maintained even after the Armistice in November 1918, into the following year of 1919, in order to force Germany to sign the controversial Treaty of Versailles in June 1919.
Simplified: Many more had to die from starvation after the Armistice in November 1918 as the blockade was continued into 1919, in order to force Germany to sign the Treaty of Versailles in June 1919.