In the passage this question was provided for, you should have been able to find the fallowing text, "Therefore it is hypothesized that Earth’s magnetic field is being produced by ionized iron moving about in the Earth’s liquid outer core. If Earth didn’t have a liquid (iron) outer core the Earth wouldn’t have its magnetic field."
Answer: Magnetic Field
Today virtually every child grows up learning that the earth orbits the sun. But four centuries ago, the idea of a heliocentric solar system was so controversial that the <em>Catholic Church classified it as a heresy, and warned the Italian astronomer Galileo Galilei to abandon it.</em> The Google homepage pays homage today to Nicolaus Copernicus, the pioneering astronomer. Legend has it that Nicolaus Copernicus and the church were at odds over his development of the heliocentric theory, a principle that disputed the widely held belief that Earth was the center of the universe.
Answer:
The tremendous gains labor unions experienced in the 1930s resulted, in part, from the pro-union stance of the Roosevelt administration and from legislation enacted by Congress during the early New Deal. The National Industrial Recovery Act (1933) provided for collective bargaining.
Explanation:
Colonial self rule
enlightenment ideas
great awakening
colonial self rule
French and Indian war
mercantilism