In most cases the eastern boundary of something will touch the western boundary of the next door something. Where "something" can be a state, province, country, estate, ocean, lake river, Earth plate etc.
A divergent boundary.
Spain is the only country to border Portugal to the east.
The eastern boundary of Massachusetts is defined by the Atlantic Ocean.
There was one major geographic feature that formed the Western boundary of the 13 colonies. This boundary feature was the Appalachian Mountains.
The eastern boundary of the Pacific Anti-Trade Winds (PAR) is greater than the western boundary primarily due to the influence of ocean currents and wind patterns. The North Equatorial Current and the California Current create a divergence in water temperature and nutrient distribution, leading to a more expansive eastern boundary. Additionally, geographic features, such as the continental shelf and coastal upwelling, further enhance the eastern boundary's extent. These factors collectively contribute to the asymmetrical nature of the PAR's boundaries.
Spain forms the eastern boundary of Portugal.
The southern half of the eastern boundary of Alabama is the Chattahoochee River.
Eastern U.S.A.
A divergent boundary.
they were the Oregon and spanish
The Indian Ocean forms the eastern boundary of Africa.
The country is Eritrea, and it's eastern boundary is formed by the Red Sea.
Atlantic ocean
The Atlantic Ocean.
Spain is the only country to border Portugal to the east.
Kentucky
Kentucky