When did the Spaniards arrive in America?

At the beginning of16th century, after Columbus returned to Spain, immigrants (poor people and prisoners, etc. ) went to Central America and South America; By the middle of16th century, some French people came to Canada (Quebec). As for the United States, due to many natural disasters in the Caribbean, some Spaniards from Central America went north to Florida and started a new frontier. They should be the earliest European immigrants, and the "Mayflower" in Britain is decades later.

In addition to the army, the first people who came to the United States were prisoners (pioneers sent to the wilderness by the government), some poor people (who made a living in North America because of the war in Europe) and bourgeois upstarts (who had no social status and disagreed with those in power because they demanded more rights).