By crashing glaciers that were melting.
The western boundary of the Roman Empire was the Atlantic Sea. The eastern boundary was Persia (modern day Iran and central and southern Iraq).
The Ohio and Mississippi rivers outlined the boundaries of the Western and Southern boundaries of the Northwest Territory.
The two bodies of water that formed the eastern and southern boundaries of Shang territory were the Yellow Sea to the east and the Yangtze River to the south.
The Appalachian Mountains formed the western border to the eastern colonies in North America.
The Atlantic Ocean.
The eastern boundary of the United States is primarily defined by the Atlantic Ocean, while the western boundary is marked by the Pacific Ocean. These natural features have shaped the country's geographic limits and influenced its exploration and expansion. Additionally, various treaties and land acquisitions throughout history, such as the Louisiana Purchase and the Oregon Treaty, played significant roles in establishing these boundaries.
eastern and western
The full circle formed by the Prime Meridian and the meridian of 180° longitude separates the eastern and western hemispheres.
The full circle formed by the Prime Meridian and the meridian of 180° longitude separates the eastern and western hemispheres.
The full circle formed by the Prime Meridian and the meridian of 180° longitude separates the eastern and western hemispheres.
West Virginia
it formed from ancient sand dunes.