Complex sentence: The Japanese objective was to seize Port Moresby by an overland advance from the north coast, through the mountains of the Owen Stanley Range, following the Kokoda Track as part of a strategy to isolate Australia from the United States.
Split into simpler sentences: The Japanese objective was to seize Port Moresby by an overland advance from the north coast, through the mountains of the Owen Stanley Range, following the Kokoda Track. It was part of a strategy to isolate Australia from the United States.