Which union general vowed to crush "with an iron hand” any attempt at an uprising by enslaved african americans?
select the best answer from the choices provided.
a.
general john c. frémont
b.
general ulysses s. grant
c.
general benjamin butler
d.
general george mcclellan

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.