Which treaties signed in October 1925 assured Germany would accept its borders as long as France left the Rhineland?

The correct answer is the Locarno Treaties, which were signed in October 1925. These treaties were significant in European diplomatic history as they aimed to secure peace in post-World War I Europe by normalizing relations between Germany and its neighboring countries, particularly France and Belgium. One of the key components of the Locarno Treaties was Germany's commitment to accept its western borders as defined by the Treaty of Versailles, provided that France would also adhere to its commitments regarding the demilitarization of the Rhineland. This agreement marked a critical step in enhancing diplomatic relations and stability in western Europe during the interwar period.

In contrast, the Versailles Treaty, signed in 1919, imposed heavy reparations and territorial losses on Germany but did not specifically address the issues of border assurances in the way the Locarno Treaties did. The Brussels Pact, signed in 1920, was an intergovernmental defense agreement which did not pertain to the specific border assurances related to Germany's acceptance. The Kellogg-Briand Pact, signed in 1928, aimed to outlaw war as a means of national policy but was unrelated to the border negotiations or the specific agreements concerning the Rhineland and borders of Germany.