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WARRIOR [948]
3 years ago
9

What were disadvantages of producing a photograph before 1839?

History
2 answers:
r-ruslan [8.4K]3 years ago
5 0

Answer:

The only  two disadvantages I know is that the photographs when taking them were incredibly sensitive to movement and so they had to sit still for a long time and had to keep their eyes shut. The other disadvantage was that the person taking the photo could have contracted mercury poisoning.

Explanation:

r-ruslan [8.4K]3 years ago
4 0
Mercury poisoning and the camera was sensitive
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Post WW1 - What is the next America time period called? And describe two changes that occurred.
Arlecino [84]

Answer:

Se conoce como período de entreguerras o interbellum al periodo histórico del siglo XX que va de 1918 a 1939. Cronológicamente, se puede establecer desde el final de la Primera Guerra Mundial el 11 de noviembre de 1918 y el inicio de la Segunda Guerra Mundial el 1 de septiembre de 1939.

A pesar de la relativa brevedad del periodo, éste representó una época de cambios significativos en todo el mundo. La producción de energía basada en el petróleo y la mecanización asociada se expandieron de forma espectacular, dando lugar a los locos años veinte, un periodo de prosperidad y crecimiento económico para la clase media de Norteamérica, Europa, Asia y muchas otras partes del mundo. Los automóviles, el alumbrado eléctrico y las emisiones de radio, entre otras cosas, se convirtieron en algo habitual entre las poblaciones del mundo desarrollado. Las indulgencias de la época fueron seguidas posteriormente por la Gran Depresión, una recesión económica mundial sin precedentes que perjudicó gravemente a muchas de las mayores economías del mundo.

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2 years ago
When did the fear of communism known as the Red scare begin in the US?
Thepotemich [5.8K]

Answer:  D. Following World War 1

Explanation:

What historians refer to as the First Red Scare occurred from 1919 to 1921, following the end of World War 1 -- but more so following the Bolsvhevik Revolution which brought communism to power in Russia.   The Bolsheviks (meaning "the Majority") were the communist faction that led a successful overthrow of the regime of the tsar in Russia in 1917.   They weren't a "majority" in Russia, but they were the dominant group within the Russian communist movement.  Civil war in Russia followed during the next years, from 1917 into the early 1920s, ultimately leading to the establishment of the Union of Soviet Socialist Republics (USSR) in 1922.  There was fear in the United States (as there was elsewhere in the world) that communism would begin to spread further, beyond Russia.

The more common reference to "The Red Scare" usually refers to what historically was the Second Red Scare, from the late 1940s to late 1950s in the United States.  Following World War 2, as the Cold War developed and the Soviet Union was gathering allies, there was even greater fear -- and fear-mongering -- in the United States about the threat of communism.   The Second Red Scare was when  The House Un-American Activities Committee (HUAC) was created and when Senator Joseph McCarthy began a campaign of accusations against suspected communists in various sectors of American life.

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Answer:

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Which group supported declaring war against England in 1812?
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