what is the impact of the Columbian exchange on Latin America and Europe in terms of the decline of the indigenous population, agricultural change, and the introduction of the horse?

There was a huge impact of the Columbian exchange on Latin America and Europe in terms of decline on indigenous population, agriculture changes and horses.

Explanation:

The Columbian exchange was basically was exchange of good, animals, people, culture and diseases between America, Africa and old world. Due to this exchange, new and advance methods or technology of agriculture took place. With exchange of the people, different cultures also exchanged between these regions. The immigration of African and old world's people in the America made the decline in the indigenous population. The Columbian exchange of animals went largely in one direction, from Europe to the New World, as the Eurasian regions domesticated many more animals such as Horses, donkeys, mules, pigs and etc.