What led to the rise of america as a world power

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.

Which two statements are true about native american tribes during the civil war? the war caused native american tribes to sign treaties and side with union forces who promised to develop indian territory. the war united the tribes against the confederacy, which wanted to secede from the union and continue slavery. the war created conflicts within the tribes because some wanted to stay loyal to the union, while others wanted to support the confederacy. the war made the tribes forget their differences and come together against the union forces who wanted to abolish slavery in indian territory. the war led native american tribes to sign treaties with the confederacy, which promised to protect the tribes and their interests in exchange for support in the war.

Without specializing, the total output for both countries after two days would be 48. if country a were to specialize in petroleum, its output would be after two days. if country b were to specialize in seafood, its output would be after two days.