Multiple system atrophy is a complex condition that is likely caused by the interaction of multiple genetic, environmental, and lifestyle factors. Some of these factors have been identified, but many remain unknown.
Mandatory Seatbelts According to the U.S. Department of Transportation, in July 1984, New York State passed the first mandatory seatbelt law in the nation, followed by New Jersey, Illinois, Missouri, Michigan, and New Mexico.
By 1973, the use of fitted seat belts by vehicle occupants was made compulsory for the rest of Australia and some other countries during the 1970s and 1980s. The subsequent dramatic decline in road deaths is generally because of seat belt laws and subsequent road safety campaigns.