Not really sure what your masking really?
On May 12, 1949, one of the first Cold War crises came to an end. The Soviet Union decides to lift the 11-month-long blockade against West Berlin. The three western sectors of Berlin were unified as West Berlin and placed under West German administration.
The miranda rights act / case
The Kansas-Nebraska Act was passed by the U.S. Congress on May 30, 1854. It allowed people in the territories of Kansas and Nebraska to decide for themselves whether or not to allow slavery within their borders. The Act served to repeal the Missouri Compromise of 1820 which prohibited slavery north of latitude 36°30´.