Answer:
Feb. 6, 1778
Explanation:
King Louis XVI approved negotiations to that end. With Franklin negotiating for the United States, the two countries agreed to a pair of treaties, signed on Feb. 6, 1778, that called for France's direct participation in the war.
Alliances are possibly the best known cause of World War I. An alliance is a formal political, military or economic agreement between two or more nations. Military alliances ...........
If your meaning 'Select all the apply', then it's B and D.
I need more context , if it has to do with WW1 I’d say the Spanish Flu