Which era is credited with causing such changes as improving workplace conditions, food safety, housing standards, and passage of the sixteenth, seventeenth, eighteenth, and nineteenth amendments?

The Progressive Era

Explanation:

The Progressive Era was a period of widespread social activism and political reform. This took place from the 1890s to the 1920s. The Progressive Era led to major improvements in various social problems, such as industrialization, urbanization, immigration, and political corruption. It saw the passage of several amendments to the Constitution and the regulation of monopolies and corporations.

answer; ///i believe that the correct answer is (b)arches and domes; ///

mosques-hypostyle halls with lots of space.towers called minarets flanks the luck

the alfred thayer mahan award for literary achievement is awarded each year by the navy league of the united states. the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation. presented since 1957, "this award for literary achievement is awarded to a u.s. navy officer, u.s. marine corps officer, enlisted service member, or civilian who has made a notable literary contribution that has advanced the knowledge of the importance of sea power in the united states."[1]