Was part of Papua New Guinea was once known as German New Guinea?

Yes. Germany took control of the northern half of the country in 1884. In 1899 the German imperial government assumed direct control of the territory, and this is when the territory became known as German new Guinea - a title it retained for only about 5 years.
Yes. Germany took control of the northern half of the country in 1884. In 1899 the German imperial government assumed direct control of the territory, and this is when the territory became known as German new Guinea - a title it retained for only about 5 years.