In which conflict did France lose all of its land holdings in North American

Seven Years' War

The Seven Years' War ended with the signing of the treaties of Hubertusburg and Paris in February 1763. In the Treaty of Paris, France lost all claims to Canada and gave Louisiana to Spain, while Britain received Spanish Florida, Upper Canada, and various French holdings overseas.

a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same

d is the right answer