The sumerians, babylonians, and phoenecians traded goods as far as africa, asia, and europe, and their main exports were a) gold and silk. b) gold and salt. c) cotton and spices. d) textiles and grain.

d

Explanation:

The primary exports of the "Mesopotamian" civilizations were textiles and grain. They were able to establish trade relationships as far away as Africa, Asia, and Europe.

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answer; they are called (pebbling);