Select the proofs presented by the archaeologists to establish the connection between the Harappan civilization and distant foreign nations.

The presence of Copper from Oman. Bricks of Kuwait. Toys of Kashmir. Pots from Nepal.

The presence of Copper from Oman.

Recent archaeological finds suggest that copper was also probably brought from Oman, on the southeastern tip of the Arabian peninsula. Chemical analyses have shown that both the Omani copper and Harappan artefacts have traces of nickel, suggesting a common origin.