Answer: household and firms
Explanation:
The circular flow model which is also referred to as the circular flow of income simply shows how money flows or changes hand between the household and the firms.
For example, the individuals purchases goods from the firm's and the firms pay individuals which are the workers wages and salaries. Money moves through different ways in the economy.
I believe the answer is Transportation Innovations
Hernán Cortés was a Spanish conquistador or conqueror that conquered the Aztec empire in 1521 with Help of commanders and leaders like Pedro de Alvarado, Gonzalo de Sandoval, Cristóbal de Olid, Nuño de Guzmán and others
