Why did so many Spanish conquistadors die during their journeys of exploration? They faced unhealthy conditions of terrible weather,
They lacked any knowledge of the area.
There were unable to work peacefully with the regional tribes.
The lengths of their journeys were too long and dangerous.

 They explored lands they were unfamiliar with and they usually explored counties that they had no previous knowledge of. They often underprepared for they're trip, or they met with native tribes who felt the explorers were a threat.

Explanation:

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.