Before world war i, france and russia had a military alliance. this meant that each country promised to support the other in the event of war. in 1914, germany declared war on russia. by the end of the year, both french and russian troops were battling the german military. which of the following, if true, would suggest that the military alliance was only correlated to, but not the cause of, france entering the war with germany?
a. french leaders made their declaration of war standing next to russian leaders.
b. france has repeatedly honored its alliance with russia during previous wars.
c. france did not declare war on germany until germany attacked france.