In 1940, exiled Russian revolutionary Leon Trotsky was assassinated in Mexico.
In 1964, President Lyndon Johnson signed the Economic Opportunity Act of 1964, allocating nearly $1 billion in an unprecedented antipoverty measure.
In 1977, NASA launched the unmanned space probe Voyager 2 to relay data and photographs of the outer solar system and interstellar space.
In 1998, the United States attacked s…