In what time period is the book Dash by Kirby Larson?

"Dash" by Kirby Larson is set during World War II, specifically in the early 1940s. The story follows a young girl named Mitsi who faces the challenges of having her Japanese-American friend, who is sent to an internment camp, while also navigating her own experiences during this tumultuous period. The historical backdrop highlights themes of friendship, loyalty, and resilience amidst adversity.