USA HISTORY

Detailed explanation-1: -This map shows how a land bridge connected the continents of Asia and North America when the most recent ice age lowered sea levels.

Detailed explanation-2: -Beringia-Bering Land Bridge National Preserve (U.S. National Park Service)

Detailed explanation-3: -The Isthmus of Panama (Spanish: Istmo de Panamá), also historically known as the Isthmus of Darien (Istmo de Darién), is the narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean, linking North and South America. It contains the country of Panama and the Panama Canal.

Detailed explanation-4: -The land bridge was called the Bering Land Bridge, also known as Beringia. It connected Asia to North America during the Ice Age, a time when glaciers and ice sheets covered a large area of the planet. At its widest point, Beringia is believed to have been about 1, 000 miles (1, 600 km) from north to south.

Detailed explanation-5: -A new study that reconstructs the history of sea level at the Bering Strait shows that the Bering Land Bridge connecting Asia to North America did not emerge until around 35, 700 years ago, less than 10, 000 years before the height of the last ice age (known as the Last Glacial Maximum).