What is the second officer in 42 of 50 united states states

Which describes a domestic policy for which president nixon was responsible? the reduction of tension between the democrats and republicans the establishment of the second frontier the reduction of tension between the united states and china the establishment of the environmental protection agency

What was the compromise that allowed california to be admitted to the union

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.