How did grant capture vicksburg in may 1863? a. grant's siege forced the starving confederates to surrender. b. grant attacked from the north defeating pemberton. c. grant led a surprise attack across the west bank of the mississippi and captured d. vicksburg.

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.