Austria facts, people, and points of interest britannica.com gas exchange in the lungs

A great part of Austria’s prominence can be attributed to its geographic position. It is at the centre of European traffic between east and west along the great Danubian trade route and between north and south through the magnificent Alpine passes, thus embedding the country within a variety of political and economic systems. In the decades following the collapse in 1918 of Austria-Hungary, the multinational empire of which it had been the heart, this small country experienced more than a quarter century of social and economic turbulence and a Nazi dictatorship. Yet the establishment of permanent neutrality in 1955, associated with the withdrawal of the Allied troops that had occupied the country since the end of World War II, enabled Austria to develop into a stable and socially progressive nation with a flourishing cultural life reminiscent of its earlier days of international musical glory. Its social and economic institutions too have been characterized by new forms and a spirit of cooperation, and, although political and social problems remain, they have not erupted with the intensity evidenced in other countries of the Continent. The capital of Austria is historic Vienna (Wien), the former seat of the Holy Roman Empire and a city renowned for its architecture.

The Austrian Alps form the physical backbone of the country. They may be subdivided into a northern and a southern limestone range, each of which is composed of rugged mountains. These two ranges are separated by a central range that is softer in form and outline and composed of crystalline rocks. The Alpine landscape offers a complex geologic and topographical pattern, with the highest elevation—the Grossglockner (12,460 feet [3,798 metres])—rising toward the west. The western Austrian Länder (states) of Vorarlberg, Tirol, and Salzburg are characterized by the majestic mountains and magnificent scenery of the high Alps. This high Alpine character also extends to the western part of the state of Kärnten (Carinthia), to the Salzkammergut region of central Austria, and to the Alpine blocks of the state of Steiermark (Styria).

North of the massive Alpine spur lies a hilly subalpine region, stretching between the northern Alps and the Danube and encompassing the northern portion of the state of Oberösterreich (Upper Austria). To the north of the river is a richly wooded foothill area that includes a portion of the Bohemian Massif, which extends across the Czech border into the state of Niederösterreich (Lower Austria). This part of Austria is furrowed by many valleys that for centuries served as passageways leading to the east and southeast of Europe and even—in the case of medieval pilgrims and Crusaders—to the Holy Land. The lowland area east of Vienna, together with the northern part of the state of Burgenland, may be regarded as a western extension of the Little Alföld (Little Hungarian Plain). Drainage

Austria is a land of lakes, many of them a legacy of the Pleistocene Epoch (i.e., about 2,600,000 to about 11,700 years ago), during which glacial erosion scooped out mountain lakes in the central Alpine district, notably around the Salzkammergut. The largest lakes—lying partly in the territory of neighbouring countries—are Lake Constance (Bodensee) in the west and the marshy Neusiedler Lake (Neusiedlersee) in the east.

The wooded slopes of the Alps and the small portion of the plains of southeastern Europe are characterized by differing climatic zones. The prevailing wind is from the west, and, therefore, humidity is highest in the west, diminishing toward the east. The wetter western regions of Austria have an Atlantic climate with a yearly rainfall of about 40 inches (1,000 mm); the drier eastern regions, under the influence of the more continental type of climate, have less precipitation.

In the lowlands and the hilly eastern regions, the median temperature ranges from about 30 °F (−1 °C) in January to about 68 °F (20 °C) in July. In those regions above 10,000 feet (3,000 metres), by contrast, the temperature range is between about 12 °F (−11 °C) in January, with a snow cover of approximately 10 feet (3 metres), and about 36 °F (2 °C) in July, with roughly 5 feet (1.5 metres) of snow cover. Plant and animal life

Two-thirds of the total area of Austria is covered by woods and meadows. Forests occupy some two-fifths of the country, which is one of the most densely forested in central Europe. Spruce dominates the forests, with larch, beech, and oak also making a significant contribution. In the Alpine and foothill regions coniferous trees predominate, while broad-leaved deciduous trees are more frequent in the warmer zones.