Which demographic change resulted from the transoceanic encounters of the early modern era?
a. Iberian middle classes were reduced as a result of emigration to New World colonies.
b. Eurasian populations were decimated as a result of the spread of the bubonic plague.
c. Native American peoples had a population boom because of new foods from Eurasia.
d. Global population doubled by the year 1800 as a result of readily available and widely grown crops.

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