The Canadian Shield, one of the world’s largest geologic continental shields, centred on Hudson Bay and extending for 8 million square km (3 million square miles) over eastern, central, and northwestern Canada from the Great Lakes to the Canadian Arctic and into Greenland, with small extensions into northern Minnesota, Wisconsin, Michigan, and New York, U.S. The Canadian Shield constitutes the largest mass of exposed Precambrian rock on the face of Earth. The region, as a whole, is composed of ancient crystalline rocks whose complex structure attests to a long history of uplift and depression, mountain building (orogeny), and erosion. Some of the ancient mountain ranges can still be recognized as a ridge or belt of hills, but the present appearance of the physical landscape of the Canadian Shield is not so much a result of the folding and faulting and compression of the rocks millions of years ago as it is the work of ice in relatively recent geologic time. During the Pleistocene Epoch (2.6 million to 11,700 years ago), the vast continental glaciers that covered northern North America had this region as a centre. The ice, in moving to the south, scraped the land bare of its overlying mantle of weathered rock. Some of this material was deposited on the shield when the ice melted, but the bulk of it was carried southward to be deposited south and southwest of the Canadian Shield. The resulting surface consists of rocky, ice-smoothed hills with an average relief of 30 metres (100 feet), together with irregular basins, which are mostly filled by lakes or swamps. In places the old mountain ranges may be recognized by hills several hundreds of meters in height. The northeastern portion, however, became tilted up so that, in northern Labrador and Baffin Island, the land rises to more than 1,500 metres (5,000 feet) above sea level. :)
<span>A drawback of the Weimar Republic is that The Weimar Government
did not have a constitution. After the First World War, the Weimar Republic
attempted to create a perfect democracy in the country. Having no constitution
became a drawback because there is no law to guide the people and they are
all free to do what they want. No restrictions, No limitations.</span>
Safavid art is the art of the Iranian Safavid dynasty from 1501 to 1722, in present-day Iran and Caucasia. It was a high point for the art of the book and architecture; and also including ceramics, metal, glass, and gardens. The arts of the Safavid period show a far more unitary development than in any other period of Iranian art.[1] The Safavid Empire was one of the most significant ruling dynasties of Iran. They ruled one of the greatest Persian empires, with artistic accomplishments, since the Muslim conquest of Persia
