What underlying cause led states to pass laws in the late 1800s requiring children to attend school a. the necessity of an educated workforce b. the growth of the civil rights movement c. the increasing number of women who worked out of the home d. the increasing rate of youth crime i think a or b

zheng he was a chinese explorer who lead seven great voyages on behalf of the chinese emperor. his seven total voyages were diplomatic, military, and trading ventures, and lasted from 1405 – 1433. however, most historians agree their main purpose was to promote the glory of ming dynasty china.

explanation:

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.