Which statement is true of the federalist papers?
a. the writers were careful to avoid the topic of slavery.
b. they were written to gain support for the constitution.
c. they were published under the pseudonym caesar.
d. thomas jefferson was one of the authors

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.