History, 26.07.2019 18:50 pennstatealum
1841 william henry patents the calotype process, exposing wet (instead of dry) paper for a much shorter amount of time with a sharper image. this is the first negative-positive process making possible the first multiple copies.
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History, 21.06.2019 20:50
Which of the following is one of franklin delano roosevelt's new deal programs?
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History, 21.06.2019 22:00
Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.
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History, 21.06.2019 22:30
What did the incas accomplish? a. written language b. formalized religion c. conquest of the western south america d. formalized government
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History, 21.06.2019 23:30
What was the great awakening? a. a religious movement b. a social movement against slavery c. a political rebellion d. a scientific movement
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1841 william henry patents the calotype process, exposing wet (instead of dry) paper for a much sho...
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