An astronomical unit (a. u.) is
a. the diameter of the sun
b. the distance from the sun to the edge of the solar system
c. the distance from the sun to the earth
d. the mass of the earth

can you me and ill you?

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles