Are factories been built around the Amazon River?

No, there are no factories built around or in the Amazon River. The Amazon River is located in South America and flows through Brazil, Peru, and Colombia. There are many indigenous communities living in the Amazon rainforest and they practice traditional ways of life. The government of these countries have strict regulations in place to protect the environment and resources of the Amazon rainforest, including restrictions on the construction of factories and other industrial activities in the region.