European explorers did not consider the indigenous people important enough to keep record.
Explanation:
Historians will find it difficult to know the true number of indigenous peoples that died as a result of the arrival of European explorers because the European explorers did not consider the indigenous people important enough to keep record. The explorers were more concerned with the conquest of oversea territories and the expansion of their kingdom, and the death of indigenous people was seen as a progress by the explorers.
