Identify and explain three important factors leading to the success of the spanish in conquering and colonizing parts of central and north america

The three important factors leading to the success of the Spanish in conquering and colonizing parts of central and North America were-

1-  Money- Spain's interest was in exploring and colonizing the Americas for the pursuit of wealth. America was supposed to have huge sources of gold and other precious materials, and Spain wanted as much control over these sources as possible.  

2- Desire to convert Native Americans to Christianity

3-Europe brought diseases- Native people of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians.

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.