I'm torn between a and b, because they both happened in that time period.
Answer:
According to them, “The history of all hitherto existing societies is the history of class struggles” — meaning the problems in society were mainly because of money. The manifesto is divided into a preamble with four main sections and a conclusion. In the spring of 1847, Marx and Engels joined the “League of the Just”.
Explanation:
The correct answer is water. Since the landscape of this region is mostly desert, Kara Kum and Kyzl Kum, water was the vital source for the civilizations of this region to make settlements and grow crops. Great civilizations of this region were build in the valleys of big river systems.
Benjamin Harrison was the 23rd president for the U.S.A
