I think it is D but I could be wrong.
A. Dialect
The word dialect means a language spoken differently within a region or social group.
Answer: A. securing workers’ compensation
The Progressive Era was a period of widespread social activism and political reform in the United States. This period lasted from the 1890s to the 1920s, and it dealt with many problems caused by industrialization, urbanization and immigration.
One of the era's most important achievements was securing worker's compensation. On June 4, 1912, Massachusetts passed the first minimum wage legislation in the United States.
The feature that helped Timbuktu make it a center of intellectual advances and culture is the "Library." Books themselves are very intellectual in its nature. It was in the <span>Askia dynasty that Timbuktu felt its prosperity in intellectual advances. </span>
