What was the largest empire in eastern europe in 1900

Austria-Hungary

Explanation:

Austria-Hungary was a large empire in Central and Eastern Europe. It was formed in 1867 and lasted until 1918. The empire was the largest one in Eastern Europe in 1900, and one of Europe's major powers at the time. The empire dissolved into several new states at the end of the First World War. It was ruled by the House of Habsburg.

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.