Events of July 21

1904 - After 13 years of construction, the Trans-Siberian railway line from Moscow to Vladivostok was completed.

1944 - American forces liberated Guam in the Pacific, which had been under Japanese control since December 1941.

1969 - American astronaut Neil Armstrong descended from the lunar module Eagle, becoming the first man to walk on the moon.

2002 - WorldCom, a telecommunications and data company, collapsed due to a financial scandal amounting to $3.85 billion and filed for bankruptcy protection, becoming the biggest American bankruptcy ever.

2002 - Nauru, located in the South Pacific, established diplomatic relations with China before severing ties with its previous ally Taiwan.

2002 - Formula 1 driver Michael Schumacher won the World Championship title for the fifth time.

2003 - Freediver Tanya Streeter set a world record in diving (122 meters).

2005 - China yielded to two years of political and economic pressure by re-evaluating its currency, the yuan, by 2.1 percent.

2008 - China and Russia signed an agreement finalizing the demarcation of their 4,300-kilometer (2,672-mile) border, which was a site of armed clashes during the peak of the Cold War.

2008 - Ram Baran Yadav became the first president of Nepal.

2011 - NASA's Space Shuttle program completed a 30-year mission with its final landing at Kennedy Space Center in Florida.

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