The American Le Mans Series became the first racing event to use the protocols in its Green Challenge competition.
VOA: special.2009.11.03
Soon after his death, Roberto Clemente became the first Latino player to be included in the Baseball Hall of Fame.
VOA: special.2010.04.11
The vaccine did not lower the amount of virus in the blood of volunteers who became infected during the study.
VOA: special.2009.10.13
The band became so popular that in nineteen sixty-six John Lennon said they were more popular than Jesus Christ.
VOA: special.2010.07.30
With the coming of Mexican independence, the Santa Fe Trail became the major trade link between the two countries.
VOA: special.2009.03.30
After several weeks, it became clear that the Senate would approve President Garfield's choice for the tax collector's job.
VOA: special.2010.04.22
She never became famous for her discoveries because she often sold her fossils to get money to support her family.
VOA: special.2009.05.13
This week,Kim Jong Un and his aunt, the sister of Kim Jong Il, became four-star generals with little military experience.
VOA: special.2010.10.02
And since it was eighteen eighty-eight -- a presidential election year -- the tariff became an important election issue.
VOA: special.2010.05.20
At least three Indian tribes were living in the area that became Charleston when Spanish explorers arrived in Fifteen-Twenty-One.
VOA: special.2010.10.04
His theory of Martian life became so complex that he made maps of cities and waterways on the planet.
VOA: special.2010.07.11
I did not intend to fight unless it became necessary in self-defense and in the performance of official duty.
VOA: special.2010.02.15
Air Force pilot Gordon Cooper became an expert on the Redstone Rocket that would launch Mercury astronauts on short training flights.
VOA: special.2009.06.10
At the age of six or seven years old, Emmanuel became a soldier for the Sudan People's Liberation Army.
VOA: special.2009.10.14
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