Final answer:
Momaday's grandmother, as part of her family history, witnessed significant events such as the Great Depression and the Armenian Genocide, which shaped their cultural heritage.
Step-by-step explanation:
Momaday's grandmother witnessed several historic and harrowing events as a child. These stories, passed down through family narratives, include the collective experiences during the Great Depression, as captured in the iconic photograph 'Migrant Mother' by Dorothea Lange, which highlights the struggles families faced. Another event that was part of the family's history was the Armenian Genocide of 1915, during which Momaday's great-uncle witnessed the murder of his family. These deeply impactful memories of historical tragedies likely shaped the family's cultural identity and perspective.