Final answer:
The oldest fossils of H. erectus/ergaster outside of Africa are between 1.2 and 1.6 million years old and were found on the island of Java in Indonesia.
Step-by-step explanation:
The oldest fossils attributed to Homo erectus or Homo ergaster found outside of Africa are estimated to be between 1.2 and 1.6 million years old. These fossils were unearthed on the island of Java, which is now part of Indonesia. The discovery of these remains marks an important milestone in understanding early human migration patterns, suggesting that H. erectus was the first hominin to migrate out of Africa and eventually settle in areas including India, China, Java, and Europe. These findings also illuminate the adaptability of H. erectus to different environments, likely aided by their use of tools, fire, and hunted food. Fossils of H. erectus have been found in India, China, Java, and Europe. These fossils were known as 'Java Man' or 'Peking Man' and provide evidence of the migration of H. erectus out of Africa.