D.railroads transported raw materials and finished products
<span>He looks absolutely revolting.
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Answer:
Indus, Vedic ,Maurya, Gupta
They experienced floods and droughtt so they couldn't grow crops
Explanation:
For millennia, ethnic and religious hatred drove refugee migrations. The Korean War (1950–53), the Hungarian Revolutionary (1956), the Cuban Revolutionary (1959), and the Chinese conquest of Tibet (1959) all led in the departure of over a million refugees throughout the 1950s.