Best answer choice is:
B.) They declared the Alien and Sedition Acts void within their borders.
The Kentucky and Virginia resolutions, made in opposition to the Alien and Sedition Acts claimed that the states could nullify any actions by the federal government that they judged unconstitutionally.
President Abraham Lincoln issued the Emancipation Proclamation on January 1, 1863, as the nation approached its third year of bloody civil war. The proclamation declared "that all persons held as slaves" within the rebellious states "are, and henceforward shall be free."
If im correct the answer should be Submarines and mines were an inexpensive and better way to engage battleships. I hope this helps. let me know if it doesnt
House Un-American Activities Committee