Question

write the name of two rivers joining the Amazon from the south​

Answer 1

The Mantaro and Apurímac rivers join, and with other tributaries form the Ucayali River, which in turn meets the Marañón River upstream of Iquitos, Peru, they form what countries other than Brazil consider to be the main stem of the Amazon.

Answer 2

The Matnaro and Apurímac rivers join, and with other tributaries form the Ucayali River, which in turn meets the Marañón River upstream of Iquitos, Peru, they form what countries other than Brazil consider to be the main stem of the Amazon.