Identifying cause and efect what factors led to massive population growth in urban areas during the late 1800s and early 1900s?

Which sentence best compares the employment opportunities between farms and cities in the late 1800s

In what way did clinton suffer a political setback in 1994? the republicans won control of both houses. the democrats won both houses. clinton lost his reelection bid. his vice-president, al gore, failed to win the presidential race.

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.