How did World War II impact Germany's borders?

The answer detailing Germany being divided into East and West Germany, with significant territorial losses, accurately reflects the major changes that occurred in Germany's borders as a result of World War II. After the war, the Allies, including the United States, the United Kingdom, France, and the Soviet Union, agreed to divide Germany into four occupation zones. This division subsequently led to the formal establishment of two separate states in 1949: the Federal Republic of Germany (West Germany) and the German Democratic Republic (East Germany).

In addition to being divided, Germany also faced significant territorial losses. The Potsdam Conference determined that Germany would lose territories in the east, including parts of what had previously been German territory, which were awarded to Poland and the Soviet Union. This meant that not only was Germany's geographical footprint reduced, but the political ramifications of this division had lasting effects on German identity and relations within Europe throughout the Cold War and beyond.

The other choices present scenarios that do not align with the historical outcomes of World War II. Germany did not experience significant expansion in eastern Europe, nor did its borders remain unchanged; additionally, Germany did not annex parts of neighboring countries following the war, as the focus was primarily on reducing its influence and restoring peace in Europe