What was the Hyde Park Aid Memoire?

The Hyde Park Aid Memoire refers to the collaboration between the United States and the United Kingdom during World War II regarding the development of the atomic bomb. This document, created in August 1941, outlines the agreement for sharing scientific research and information related to nuclear weapons development. It signifies an important step in the Allied nations' efforts to harness atomic energy for military purposes in the context of the war. The collaboration was part of a broader effort that ultimately culminated in the Manhattan Project, which successfully developed the first nuclear weapons. This agreement marked a pivotal moment in the scientific and military history of both nations as they worked together on a critical aspect of wartime technology.