The main way in which inventions such as the telescope and microscope changed the way people saw world is that the former invention allowed them to see into space, which gave a much better representation of Earth's place in the Universe--while the latter invention allowed people to see microorganisms and things like cells, which allowed them to better understand life on earth.
I’d have to say C or D but I’d mainly go for C cause it’s pretty logical
The Federal housing programs discriminates by refusing to considered black for the scheme and had to pay more for the housing.
The federal housing programs was a federal scheme which is established to assist the low-income families, elderly and disabled to own a property in the U.S.
There are cases of discrimination alleged on the Federal housing programs before the 20th Century where they refused to considered black for the scheme and had to pay more for the housing.
However, the Fair Housing Act 1968 to enacted to address the issue on discrimination concerning the sale, rental and financing of housing based color, origin etc
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For the Louisiana purchase question, it more than doubled the size of the united states. As for the second question I believe the answer would be "Thomas Jefferson was eager to explore the west to ensure the survival and prosperity of the United States"