Answer:
A. They worked as farmers
Explanation:
During the 1700's the population was almost completely rural. Most American's didn't have any other choice but to farm off of the land they owned.
Racial mixing and to prevent that there was Jim Crow Laws
Lincoln was technically racist in the sense that he viewed blacks to be inherently different than whites, but given the time in which he lived he was probably the least racist person in the United States. He was above all a pragmatist.
Answer:
Gutenberg's moveable type printing press invention
Explanation:
Johann Gensfleisch von Gutenberg in 1450, Mainz, Germany, was the first to assemble and bring together complex systems and subsystems necessary to print a typographic book which was sought by printers in different countries such s Germany, France and the Netherlands. Gutenberg's moveable type, made use of ink made from boiled linseed oil colored with lampblack.
<h2>Answer: Marie Curie
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Marie Curie's notebooks, as well as all of her belongings, including her clothes, were contaminated with ionizing radiation. In fact, those of her husband also, because this couple of scientists discovered the radioactivity of several elements, helping the advance of science, but <u>did not know about the consequences of dealing with these materials without adequate protection.
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It should be noted that Curie's notes are stored in the basements of the National Library of France, stored in thick lead boxes and those who wish to access these documents must follow the appropriate protocol to treat radioactive material, wear appropriate clothing and sign a responsibility agreement before allowing them to review the documents.
