The Great Wall of China was built around 220-206 BC under Emperor Qin Shi Huang to protect the Northern boundaries of China.
The Himalayas Mountains
Himalayas
The barrier islands
The Great Barrier Reef
The Niagara Escarpment, a long tall cliff that the Niagara falls goes over.
The Himalayan mountain range serves as a significant physical barrier between India and China, limiting direct contact and hindering easy travel and communication between the two countries.
It is a physical feature; the Savannah River.
Desert. It made for a formidable natural barrier against any neighboring peoples considering an invasion.
Desert. It made for a formidable natural barrier against any neighboring peoples considering an invasion.
The Appalachian mountains
This is the Great Barrier Reef, the world's largest coral reef and the only living organism visible from space. It extends about 2300km down the coast of Queensland.
Mountains are often considered a geographic feature that served as a natural barrier between cultures, as they are challenging to cross and can restrict movement and communication between different groups of people. For example, the Himalayas in Asia and the Andes in South America have historically limited contact and interaction between nearby cultures.
The Appalachian Mountains provided a natural barrier to the western expansion of the English Colonies in America, or so some thought.