Which country's efforts to colonize North America did not include Spain?

The correct answer is Portugal. Portugal was primarily focused on exploration and colonization in regions such as Africa, Asia, and Brazil, but it did not make significant efforts to colonize North America.

In contrast, the other countries mentioned had notable colonization efforts in North America. France established territories in Canada and parts of the United States, such as Louisiana. Sweden founded New Sweden along the Delaware River, which included parts of present-day New Jersey and Pennsylvania. The Netherlands played a significant role in North America with the establishment of New Amsterdam, which later became New York City. Thus, while these countries were involved in the colonization of North America, Portugal's interests were directed elsewhere, leading to it not being part of the colonization efforts on the continent.