According to document c, who intercepted the original document (document a), decoded it, and is now sharing it with the united states? why are they sharing the coded message in document a with the united states?

Tenochtitlán was the capital of the aztec empire. it was a busy and bustling city where“there are daily more than 60,000 souls, buying and selling, and where are found all the kinds of merchandise produced in these countries.” when cortes arrived in 1519, theenormity of the trading market and the smoothness of it’s running both surprised and  impressed him.

The rebelled against the church and almost took it down