Pt.5/10 NEED ANSWERS QUICK!
In the 1840s, Congress’s main argument over the transcontinental railroad concerned
A-the geographic direction of the railroad.
B-the money needed to fund the railroad.
C-the lack of workers to build the railroad.
D-the places the railroad should run through.

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.