Is 'These latter vast regions of forests, rivers, and mountains border the Indonesian state of Kalimantan and the oil-rich sultanate of Brunei.' a fitting logical lead-up to 'The region near the Indonesian border is flat and has sparse vegetation.'
These latter vast regions of forests, rivers, and mountains border the Indonesian state of Kalimantan and the oil-rich sultanate of Brunei.###The region near the Indonesian border is flat and has sparse vegetation.