Answer:
B. The opinions may provide clues to the source's feelings and possible bias.
Explanation:
A reason that a historian may want to consider opinions, as well as facts as reported by a source, would be to make sure that the source is not biased and to know his true feelings because his emotions can cloud his judgment.
Therefore, the correct answer is B.
Negative Effects :
-A widening gap emerged between the Bourgeoisie and the working class
-The pollution of the environment worsened, including urban environments where the majority of the population lived
-Water in canals, which people used, was contaminated
-Cities were overcrowded
-Sanitary conditions were poor because they were unadapted to the massive rural exodus
Hope this helps,
Davinia.
They wanted a strong leader and party to boost up the economy because there where heavy sanctions after WW1 and Hitler had a way with words to get people to listen
It gave empires new technologies and attracted more people
