What kinds of ideas defined the Progressive Era?

Business people who received land grants to recruit new settlers to the area were known by what term

How and why did british north american colonists fight a revolution to create a constitutional republic, the united states of america?

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.