1797 is the year of XYZ!!!
The answer is C. Adena and Hopewell.
The various cultures collectively termed Mound Builders were inhabitants of North America who, during a 5,000-year period, constructed various styles of earthen mounds for religious and ceremonial, burial, and elite residential purposes. These included the Pre-Columbian cultures of the Archaic period; Woodland period (Adena and Hopewell cultures)
Correct answer: D. To help former slaves make the change to freedom
Details:
The Freedmen's Bureau was established by Congress in 1865, in the aftermath of the Civil War. The aim of the Bureau was to provide assistance to former black slaves (as well as poor whites) in the South during the Reconstruction period. The Freedmen’s Bureau provided food and housing, established schools, and made medical and legal assistance available. There was an intention of settling former slaves on land confiscated or abandoned during the war, but that didn't materialize. Radical Republicans took over dominance in Congress and they determined that confiscated lands in the South should be returned to their original owners.
Since free trade allows the business market to reach overseas outside their own nations, many business man seek to sell and cooperate with the other nation's business cooperation in order to expand their market and gain more profit. This urged the economy to become global with the economic exchange across countries.
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Most soldiers started to use gas bombs