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.
1964 was the year in which most U. S. cars came with front seat lap belts; by 1965, all states had laws requiring them. Lap belts were still the belts of choice â despite medical evidence that in accident conditions lap belts had the potential to cause separation of the lumbar vertebrae.