Arctic ocean.
The Ural Mountains.
great lakes
none it is entirely artificial
The eastern boundary of ancient Egypt was the eastern desert, the western boundary was the Western Desert, and the northern boundary was the Mediterranean Sea. These geographical features provided natural barriers that helped define the boundaries of ancient Egyptian settlement.
The Ural Mountains separate the northern European and west Siberian plains. They form a natural boundary between Europe and Asia.
the country that forms the northern boundary of the United States is Canada :)
Norway, Finland, and Russia were creating a northern boundary.
The northern boundary of New Hampshire is defined by the Canada–United States border, specifically the state of Quebec. This boundary runs approximately 58 miles from the Connecticut River in the west to the Atlantic Ocean in the east. The border is characterized by a mix of forests and mountainous terrain, reflecting the natural landscape of the region.
Canada.
The Hindu Kush and Karakoram mountain ranges mark the northern boundary of the Indus River valley civilization. These mountain ranges act as natural barriers, providing protection and isolation for the civilization.
The northern boundary of Sumatra is a general tectonic boundary where the Eurasian Plate meets the Sunda Plate. This boundary can experience earthquakes and volcanic activity due to tectonic movements.
forestry ,hydroelectricity ,mining ,oil ,and gas ,agriculture and fishing