The Nueces River.
The boundary line is solid. If not it will be a dashed line.
Most of the Mexico-Belize border is defined by the Hondo River (Spanish: Rio Hondo).There is however, a Rio Hondo located in the US State of New Mexico, but it doesn't define any boundary with the country of Mexico.
Gulf of Mexico Gulf of Mexico
The boundary line marks the edge or limit of a defined area. The area immediately inside the boundary refers to the space or region that falls within the set limits of the boundary line.
The official definition of boundary is "a line that marks the limits of an area; a dividing line."
england, Mexico
A boundary is a restriction, a line of demarkation. That fence is the boundary between our property. The ball went outside of the boundary.
The boundary line under the basket is known as the baseline.
If a volleyball hits the boundary line, it is considered in bounds.
the ball went outside of the boundary line.
One example is the border line that goes from the Rio Grande River in El Paso/Ciudad Juarez west to the Pacific Ocean; such artificial boundary limits the border between Mexico and California, Arizona and New Mexico.
i believe it is boundaries