What is “clean coal”?

a.
coal that is first washed and purified before being shipped for use in power plants

b.
coal that is burned with technology that cuts the amount of soot and sulfur dioxide emitted

c.
coal that is mined underground with minimum impact on the surface environment

d.
coal mined in certain regions of the country from veins that are free from impurities

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons

Which statement in the passage best reflects sumer's opinion of the dred scott decision? a."i speak what cannot be denied." b."[the] judgment was sustained by a falsification of history." b."the opinion was more thoroughly abominable than anything history." i speak what cannot be denied when i declare that the opinion of the chief justice in the case of dred scott was more thoroughly abominable than anything of the kind in the history of courts. judicial baseness reached its lowest point on that occasion. you have not forgotten that terrible decision where a most unrighteous judgment was sustained by a falsification of history. -charles sumner, 1865

In a few sentences, explain how the medici family contributed to the renaissance.