Answer:
Indus River Valley
Explanation:
Modern day Punjab and Sindh provinces were proven to be the Indus's two largest cities : Harappa and Mohenjo-daro
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The Western Front was the main theatre of war during the First World War. Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France.
That all of its bordering countries would fall to communism