All are facts about World War 1 except ?
a. Technological improvements occurred, such as airplanes and tanks
b. Trench foot occurred due to so much fighting in the trenches on the ground
c. Germany’s strategy was to go through Belgium first and then down into France
d. The Lusitania was sunk in 1917

d. The Lusitania was sunk in 1917.

Explanation:

This statement is wrong. The Lusitania, a British trasatlantic passenger ship, was sunk in 1915, not in 1917, by a German submarine. It is one of the causes of the United States entering WWI.

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;