Hi ugh What Doc?? For me to answer the question
<span>In the European history, the Early Middle ages lasted from 5th to the 10th century. The Early Middle Ages was the period where population was declining, majority of which was from the urban centers. The trades were also decreasing, increasing the immigration. From this statement, D, B, A can be cancelled out.
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Geography played a critical role in the economic development of ny, boston and charleston, since all of these cities were located on the atlantic ocean and had protected harbors, that allowed for unprecedented levels of trade with both other states and other nations.</span>
A. radio
The radio became popular in the 1920’s due to Americans finding a new interest in music.
