Which state borders Canada?

Maine is the correct choice because it is located in the northeastern part of the United States and shares a long border with Canada. This border is particularly significant, as it connects through multiple regions, including the province of New Brunswick and Quebec. Maine's geographical position makes it one of the states that have the most direct access to Canada, facilitating cross-border interactions for trade, travel, and cultural exchange.

In contrast, Florida, Texas, and California do not border Canada. Florida is situated in the southeastern region, Texas is in the south-central area, and California is located on the western coast of the U.S. While Texas and California share borders with Mexico, they do not have any direct geographical connection to Canada. This distinction highlights Maine’s unique positioning among the U.S. states in relation to Canada.