This article explains how the US westward expansion influenced and stimulated Japanese migration to Brazil. Emerging in the nineteenth century as expanding powers in East Asia and Latin America, respectively, both Meiji Japan and post-independence Brazil looked to the US westward expansion as a central reference for their own processes of settler colonialism. The convergence of Japan and Brazil in their imitation of US settler colonialism eventually brought the two sides together at the turn of the twentieth century to negotiate for the start of Japanese migration to Brazil. This article challenges the current understanding of Japanese migration to Brazil, conventionally regarded as a topic of Latin American ethnic studies, by placing it in the context of settler colonialism in both Japanese and Brazilian histories. The study also explores the shared experiences of East Asia and Latin America as they felt the global impact of the American westward expansion.