Who were the federalist leaders of the United States?

How did the roaring 20s mark the end of the progressive era? a. mass production reduced wealth disparity and turned public opinion pro business b. labor unions won big legislative gains in workers rights and disbanded c. public officials cut taxes on businesses and reduced spending on services d. america increasing influence in world affairs redirected public attention to foreign policy

Once the plague became airborne, how could it then be spread?

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?