The sea.
The farthest boundary between settled and unsettled territory is often referred to as the "frontier." This boundary represents the edge of human civilization, where agricultural practices and urban development give way to wilderness and uninhabited land. Throughout history, frontiers have shifted due to exploration, colonization, and population movement, reflecting changes in societal expansion and resource availability. The concept varies by region and context, influenced by factors such as geography, culture, and technology.
the active boundary between plates is a ?
Convergent on the western perimeter, divergent on the Easter perimeter.
The Durand Line is the boundary line between Afghanistan and Pakistan. It was established in 1893 by the British Empire and is recognized by the governments of both countries. The line has been a source of dispute and tension between Afghanistan and Pakistan over the years.
The Mississippi River serves as the natural boundary between Mississippi and Louisiana.
The Ohio river
The sea.
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The two rivers that marked the northern boundary between Spanish territory and the United States in 1819 were the Sabine River and the Red River. This boundary was established through the Adams-Onís Treaty, which defined the limits of Spanish territory in North America. The treaty aimed to settle disputes and clarify territorial claims between the U.S. and Spain.
The Arroyo Hondo stream
The Appalachian Mountains.A wall of Mountains The 1,500-mile- long Appalachian Mountain range formed a natural barrier to westward expansion.
The Mississippi River.
The Oregon Treaty set the boundary at the 49th Parallel.
In order to resolve the Aroostook War, Daniel Webster and the British ambassador, Lord Alexander Ashburton, had to create a treaty. In this treaty, known as the Webster-Ashburton Treaty, the territory that was fought over was split between Maine and British Canada. The treaty also settled the boundary of the Minnesota territory.
Baffin Bay forms a natural boundary between Greenland (an autonomous territory of Denmark) and Baffin Island (part of the Canadian territory of Nunavut).
Mexico.
The Line of Control is the boundary line between two countries in a disputed area. The boundary of the territory was changed to the newer path of the river.