Romania and Bulgaria signed the European Union’s Treaty of Accession, the last step to joining the Union.
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A highwayman, Nicolas Pelletier, was the first man to be executed by the guillotine in Paris, France.
President Harry Truman opened the two-lane White House bowling alley.
Bell Labs demonstrated the first practical silicon solar cell in New Jersey, US.
New York state became the first to require license plates on automobiles.
Kathmandu, Nepal, was devastated by a major earthquake.
