The far higher crop yields from sweet potato gardens radically transformed traditional agriculture and societies.
Sweet potato largely supplanted the previous staple, taro, and resulted in a significant increase in population in the highlands.
Approximately 216,000 Japanese, Australian, and US servicemen died.
The natives of Papua appealed to the United Nations for oversight and independence.
Archaeological evidence indicates that humans first arrived in Papua New Guinea around 42,000 to 45,000 years ago.