Understanding how populations change in new environments is a fundamental goal of evolutionary genetics. To gain insight into population dynamics, it is crucial to understand the relationships between individuals across the landscape. In this study, we examined the impact of long-range introductions on the genetic diversity of C. bursa-pastoris in the United States. Using whole-genome sequences of C. bursa-pastoris from across the country, we analyzed genetic diversity, population structure, and compared these sequences to those from the ancestral range. This research provides insights into the evolution of C. bursa-pastoris over the past 500 years, shedding light on population establishment and persistence following long range dispersal events

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