BackRub

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References

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NBA Lakers Celtics Finals Kevin Garnett shooting.

10 Great Sports Rivalries

Candles Burning On Table In Church

What Is the Most Widely Practiced Religion in the World?

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Flags of the countries of the world (flagpoles).

How Many Countries Are There in the World?

Statue of Nostradamus

Nostradamus and His Prophecies

Space race (1957-1969) infographic between United States (U.S.) and Russia. America, Soviet Union, U.S.S.R., space exploration

Timeline of the Space Race, 1957–69

BackRub

search technology

Learn about this topic in these articles:

Google Inc.

In Google
…search technology, which they dubbed BackRub. The key was to leverage users’ own ranking abilities by tracking each website’s “backing links”—that is, the number of other pages linked to them.
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