These special dolmens located in present-day Netherlands were built about 5,000 years ago.
Limestone is a widely and diversely used material.
Jamestown, founded in 1607, was the first permanent English settlement on the east coast...
The animation presents the largest mountains, plains, rivers, lakes and deserts of the Earth.
The cannon was an important type of firearms at the beginning of modern history,...
The fearsome looking Aztec warriors could not stop the Spanish conquistadors with their...
The Crow are Native Americans who inhabited the Yellowstone River valley.
Paper was invented more than two thousand years ago.
The aircraft manufactured by the British de Haviland company was the world's first...
The knee joint is made up by the femur, the tibia and the kneecap.
The migration of large human populations began in Ancient times.
The last Ice Age ended about 13 thousand years ago.
Every era and every culture has specific residential buildings.
Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.
The Emperor of the vast Far-Eastern empire was the lord of life and death.
Пристанищата осигуряват нужната инфраструктура и услуги за индустрията и морския транспорт.
Airports provide infrastructure and services necessary for aviation.
System that satisfies consumers’ demands of water supply, wastewater disposal,...
The staggered conformation of ethane is more stable than the eclipsed conformation.
Learn the concept of colours, numbers, letters and shapes while playing