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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

In the nineteenth century, the farming areas around Chicago developed rapidly because-

A. new irrigation waterways were built
B. men who had been soldiers provided a plentiful workforce
C. new machinery permitted farming on a large seale
D. the Greal Lakes were linked
সঠিক উত্তরঃ D. the Greal Lakes were linked
Explanation: