1940s 1950s facts

While investigating facts about 1940s 1950s, I found out little known, but curios details like:

Most of the modern global poultry industry relies on a single breed of chicken from a farm in Connecticut that won the national "Chicken of Tomorrow" competition in the late 1940s and early 1950s.

In the 1940s and 1950s, hundreds of thousands of members of the US armed forces were exposed to ionizing radiation from nuclear testing during active duty. These "atomic veterans" were sworn to secrecy, and many received no treatment or compensation for the illnesses they later developed.

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 13 of the best facts about 1940s 1950s I managed to collect.

1. Randolph worked with civil rights leader Bayard Rustin during the 1940s and 1950s to protest segregation and help pass some early anti-segregation laws such as Fair Employment Act of 1941, which banned discrimination in the defense industry.

2. In the 1940s and 1950s there were a series of steam locomotives that would routinely haul 160 rail cars, each individually weighing 60 tons, over the mountains between West Virginia and Virginia. The locomotive itself weighed 771,000lbs, and was 125 feet long

3. People started living in trailer homes during the Great Depression as a cost-saving measure, and that they reached their heyday in the 1940s and 1950s with the introduction of double-wides

4. Although Yugoslavia became a communist country after World War II, it quickly broke with the Soviet Union. It received American aid in the late 1940s and early 1950s, although the aid was not part of the Marshall Plan.

5. Although the Marshall Plan involved the United States giving direct financial aid to western Europe, it helped to increase American exports. American steel factories boomed in the late 1940s and early 1950s as they exported parts and finished goods to Europe.

6. The earliest known case of infection with HIV-1 in a human was detected in a blood sample collected in 1959. Genetic analysis of this blood sample suggested that HIV-1 may have stemmed from a single virus in the late 1940s or early 1950s.

7. During the "Red Scare" in the United States during the late 1940s and 1950s, and to a lesser extent in the 1960s, activists on the far right of American politics routinely asserted that fluoridation was part of a far-reaching plot to impose a socialist or communist regime.

8. All steel produced after the first atomic bomb detonations in the 1940s and 1950s is considered contaminated. Steel produced before the blasts is considered valuable due to medical and scientific reasons.

9. During the late 1940s and 1950s, Sweden had programs for both nuclear and chemical weapons. However, no weapon was ever deployed. In the late 1960s, the political and budgetary problems hindered the use of these weapons, and, by the mid 1970s, all plans for these weapons were scrapped.

10. Australia's first female jockey dressed up as a man and called herself 'Bill' to overcome a prohibition on female jockeys in the 1940s and 1950s

What is true about 1940s 1950s?

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Between the 1940s and the 1950s a monetary union was proposed that would make Norway use the British Pound