1. An area or territory that has limited written records, historical documentation, or official information available
The Amazon basin remains a region with sparse documentation of indigenous settlements.
A bacia do Amazonas permanece uma região com documentação escassa de assentamentos indígenas.
2. A geographical area lacking comprehensive archival records or scholarly research
Medieval rural areas were often regions with sparse documentation.
As áreas rurais medievais eram frequentemente regiões com documentação escassa.