Why did diseases like smallpox kill off Native Americans and not the European populations responsible for transmitting (le spreading around infecting others) it?

The largest city in brazil, sao paulo, has a population of about 11 million. based on the rank-size rule, what is the population of the second-largest city, rio de janeiro, most likely to be? a. 8 – 10 million b. 5 – 6 million c. about 3 million d. about 1 million

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What was significant about the 1896 supreme court rulling in plessy v. ferguson