The inland Amazon River region appeared as the second main destination for the workers, who also came through Peru to work on rubber plantations in northwestern Bolivia.
In the 1930s, most Japanese remained as settlers and many brought wives from their home country while most married local women; these made difference that divided the community.
The need of relocating surplus populations from war-torn Japan met the Bolivian government's wish to develop the eastern lower lands in Santa Cruz Department.
Subsequent generations had a decreased fluency in the Japanese language, which was attributed to the absence of Japanese-language schools in communes and speak Spanish more fluently than the first-generation settlers.
Conversion to Catholicism among the Japanese community increased during the 20th century, which Thompson noted was due to the absence of strong Shinto or Buddhist religious institutions which the settlers could emphasise their faith.