Which country did H. Heintzpeter serve in?

H. Heintzpeter served in Holland, which reflects his significant contributions to the church and its development in that region. His work was particularly influential during a time when the church was expanding its mission and outreach efforts. Holland was a notable area for the Adventist movement, where Heintzpeter played a vital role in establishing and strengthening church congregations. His legacy in that country is recognized in the context of the broader growth of the Adventist community in Europe, as well as his commitment to evangelism and education in a culturally diverse environment.