Jimmy Hoffa is a former American labor union leader who disappeared in 1975 and was declared legally dead in 1982. His disappearance remains a mystery and has been the subject of numerous theories and investigations.

The Great Steel Strike of 1919 was a major labor strike in the United States that involved over 350,000 steelworkers. It lasted for several months and resulted in violent clashes between workers and law enforcement. The strike ultimately failed to achieve its goals, but it helped to galvanize the labor movement and led to improvements in working conditions for steelworkers.

A list of well-known presidential pardons, including Richard Nixon’s pardon by Gerald Ford and Bill Clinton’s pardon of Marc Rich.

The Open-air School Movement was a response to the high incidence of tuberculosis in the early 20th century. These schools aimed to improve the health of children by providing fresh air and sunlight, and were successful in reducing the spread of the disease.

The Bread and Roses Strike was a labor strike in 1912 in Lawrence, Massachusetts, where textile workers protested against low wages and poor working conditions. The strike lasted for two months and gained national attention, leading to improved labor laws and better working conditions for workers.

The Espionage & Sedition Acts were laws passed in the United States during World War I that made it illegal to interfere with military operations or to speak out against the government or the war effort.

The Immigration Act of 1965 was a law that abolished the national origins quota system and allowed for more immigrants from non-European countries to enter the United States.