Answer:
I'd probably go for either A or C.
Explanation:
There was massive unemployment during the Industrial Period, and D would be completely incorrect. The mass production of factories and crammed living space resulted in a great amount of pollution - this is how London's 'The Great Smog' came about.
The Social Democratic Workers' Party of Germany was founded in 1869 under the influence of Marx and Engels. In 1875, it merged with the General German Workers' Association of Ferdinand Lassalle to become what is known today as the German Social Democratic Party (SPD).
https://en.wikipedia.org/wiki/History_of_socialism
An example of data that a historian would use is "pictorial data", since illustrations can provide unparalleled insight into the past--sometimes even more so than books.
Answer: The entry of the United States was the turning point of the war, because it made the eventual defeat of Germany possible. It had been foreseen in 1916 that if the United States went to war, the Allies' military effort against Germany would be upheld by U.S. supplies and by enormous extensions of credit.
Explanation:
