Which factor most promoted the spread of ideas and products from the ancient river valley civilization of Egypt and Mesopotamia to the Greek and Roman

The factor that most promoted the spread of ideas and products from the ancient river valley civilization of Egypt and Mesopotamia to the Greek and Roman, was trade relationships.

Trade was of the utmost importance for these civilizations because it gave them the resources to live and prosper.

Through trade, not only goods were exchanged but ideas, traditions, culture, belief systems, stories, and language.

An example of this is the Pantheon of gods that started with the Sumerians in Mesopotamia, which is very alike to the Pantheon of gods of Ancient Egypt, the Indus Valley Civilization, the Greek Pantheon, and the Roman Pantheon. All of them, very similar.

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The correct answer to this open question is the following.

Although there are no options attached, we can say the following.

The factor that most promoted the spread of ideas and products from the ancient river valley civilization of Egypt and Mesopotamia to the Greek and Roman, was trade relationships.

Trade was of the utmost importance for these civilizations because it gave them the resources to live and prosper (years later, the money or currency). Through trade, not only goods were exchanged but ideas, traditions, culture, belief systems, stories, and language. One of the best examples of this is the Pantheon of gods that started with the Sumerians in Mesopotamia, which is very alike to the Pantheon of gods of Ancient Egypt, the Indus Valley Civilization, the Greek Pantheon, and the Roman Pantheon. All of them, very similar.

it's a secular holiday. it is and was a custom developed to recognize the ending of a time and a wish for a good future. the kind of kiss you exchange, if you are single, is intended to predict what kind of year you will have in the coming year.

it is saying good bye to the last year with all its ups and downs, and hello to the new year, with all its hopes and dreams.