Answer:
Weather patterns are a common cause in barometric pressure drops. When low-pressure weather systems move in over a certain area, not only is pressure in the atmosphere shifted, but it causes the barometric pressure reading to drop. A low-pressure system indicates that low-pressure air rises and begins to cool.
Explanation:
it should be wind yeah that's it
As far as I know, it was the Chinese - there is evidence they had movable printing press as early as in 12th century.
In Europe the movable print was devised by Johannes Gutenberg in Germany, Mainz.
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Answer:
In the 1857 Dred Scott decision, the U.S. Supreme Court ruled that African Americans were not citizens of the United States.
Explanation:
