In pre-colonial africa, government systems did not exist. (i want to answer it myself so heres the false)

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

What create a global village and the emergence of a new international popular culture

What are the two powers that the federal and state governments share?