It's the Pleages. The reason this is caused was the fleas on rats infected into humans water.
Answer:
Europa es el cuarto continente más poblado después de Asia, África y América con una población de 735.000.000 o alrededor del 11% de la población mundial. En los siglos XVII y XVIII, las naciones europeas conquistaron y saquearon la mayor parte de África, América, y gran parte de Asia.
Explanation:
The primary cause of Europeans' anxiety about the future of their society in the early 1920s is: The Great war.
<h3>The Great war</h3>
The Europeans' was worry about the future of their society because of the great war or World War I as they do not know what the outcome of the war will be in the early 1920s.
During the period of great war many lives were loss and many army loss their life.
Therefore the primary cause of Europeans' anxiety about the future of their society in the early 1920s is: The Great war.
Learn more about great war here:brainly.com/question/8535233
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Answer:
Countries are likely to go to war if they are being directly threatened as a result of an attack. For example in World War II the US only entered after Pearl Harbor was attacked. Wars happen a lot frequently than you think, most of them occuring as a result of a being directly threatened.
Explanation:
Basic Idea, elaborate.