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The Rhineland</em></u>
The Rhineland region (in German, Rheinland) is the name used to designate the lands on both sides of the Rhine River, in the west of Germany.
The situation of the region remained the same, until the German capitulation of the First World War, at the beginning of the 20th century, when the western part of the Rhineland was occupied by forces of the Triple Entente; Under the Treaty of Versailles, the region was demilitarized.
Either option C or D, made the most sense
It would be "Tikal" that is the largest Mayan ruin and contains one of the tallest structures in Pre-Columbian America, although it's the actual temples within Tikal that count.
I can confirm the answer is A. federalism