Identify the significance of explorer Columbus, Marquette and Hudson please help.

Significance of the explorer Columbus:

He made four trips across the Atlantic Ocean from Spain: during the time in 1492, 1493, 1498, and 1502.Thus led him to discover numerous Caribbean islands, the Gulf of Mexico, and the South and Central American mainland.

Significance of the explorer Hudson:

He also went onto his first voyage, west from England in 1607, hired by a person (Can't remember on the top of my head)After going through some difficulties in his explorations, Hudson started on his third voyage, however, this time he went through the request of the Dutch East India Company, in 1609.

Sorry, those are all the events that Columbus and Hudson went through that I could remember. I hope this assists you!