In their 1929 study, Middletown, Robert and Helen Lynd: a. found that Americans were increasingly involved in local politics. b. argued that leisure and consumption had replaced political involvement. c. based their findings on a study of Los Angeles and New York City. d. based their findings on a study of Chicago. e. noted the increase in voter participation with the enfranchisement of women.

b. Argued that leisure and consumption had replaced political involvement.

Explanation:

Known as the Middletown studies, the 1929 study by Robert Staughton Lynd and Helen Merrell Lynd, husband-and-wife sociologists, were sociological case studies of the white residents of City of Muncie in Indiana. Their findings were detailed in Middletown: A Study in Modern American Culture, published in 1929, and Middletown in Transition: A Study in Cultural Conflicts, published in 1937. The research was made for the purpose of discovering key cultural norms and better understanding social change in America.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.

i would say b. research typically uses a variety of sources