Alexandra Bergson is the main character in Willa Cather's novel, "O Pioneers!" She is a strong and determined woman who inherits her family's farm in Nebraska. Alexandra is known for her intelligence and independence, often challenging traditional gender roles of her time. Throughout the story, Alexandra works hard to cultivate the land and support her family. Her dedication to farming and her vision for the future reflect the struggles and triumphs of early 20th-century pioneers in the American Midwest. Alexandra's character embodies resilience and the spirit of innovation in a changing world.