Ancient history

In what early civilization did an increase in trade lead to spread of new ideas?

The correct answer is: Indus Valley Civilization.

The Indus Valley Civilization, also known as the Harappan Civilization, flourished between 2500 BC and 1900 BCE in the basins of the Indus River wherefore it derives its name. At its peak, the civilization spanned over a million square kilometers, including much of what is now Pakistan and Western India. It had commercial links with Mesopotamia, leading to an exchange of ideas and new technologies like pottery-making and writing.