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    What years were the beginning and end of the 20th century?

    What years were included in the 20th century?

    When does the decade end?

    What does 20th century mean?

  2. 20th century - Wikipedia

    en.wikipedia.org › wiki › 20th_century

    The 20th (twentieth) century began on January 1, 1901, and ended on December 31, 2000. It was the tenth and final century of the 2nd millennium.Unlike most century years, the year 2000 was a leap year, the first century leap year in the Gregorian calendar since 1600.

  3. Twentieth century does not begin on January 1, 1900 ...

    www.historylink.org › File › 2012

    The twentieth century begins on January 1, 1901. What was called the Christian Era -- now called the Common Era to reflect the diversity of religions -- began in the year 1. Twenty centuries after the year 1 brings us to 1901, which puts the beginning of the twentieth century on January 1, 1901.

  4. Timeline of the 20th century - Wikipedia

    en.wikipedia.org › wiki › Timeline_of_the_20th_century

    Vicente Fox becomes Mexican President, ending 71 years of single-party rule in the nation. John F. Kennedy Jr. plane crash. 2000s 2000. The first day of the 21st century and 3rd millennium was celebrated worldwide on New Year's Day 2000, even though according to the calendar it is a year early.

  5. When did 20th century begin and end? - Answers

    www.answers.com › Q › When_did_20th_century_begin

    Dec 31, 2000 · "20th Century" is the designation for the period of 100 years that began on January 1, 1901, and ended on December 31, 2000.

  6. Did the Millennium Start in Year 2000 or 2001?

    www.timeanddate.com › counters › mil2000

    The year number in the Gregorian calendar was about to tick over to 2000, supposedly ushering in not only the 21st century but also the 3rd millennium CE. However, the party was held one year too early—it should have been on January 1, 2001.

  7. While the period 1900-1999 is of course a century, as is any period of 100 years, it is incorrect to label it the 20th century, which began January 1, 1901, and will end on December 31, 2000. Only then will the third millennium of our era begin.

  8. Century - Wikipedia

    en.wikipedia.org › wiki › Century

    In general usage, centuries are built by grouping years based on their shared digits. In this model, the 'n' -th century started/will start on the year (100 x n) - 100 and ends in (100 x n) - 1. For example, the 20th century is generally regarded as from 1900 to 1999, inclusive. This is sometimes known as the odometer effect.

  9. U.S. Immigration Before 1965 - HISTORY

    www.history.com › topics › immigration

    The peak year for admission of new immigrants was 1907, when approximately 1.3 million people entered the country legally. Within a decade, the outbreak of World War I (1914-1918) caused a decline ...

  10. In which year did the 21st Century begin, 2000 or 2001? - Quora

    www.quora.com › In-which-year-did-the-21st-Century

    January 1, 2001 The 21st century is the current century of the AD era, in accordance with the Gregorian calendar. It began on January 1, 2001 and will end on December 31, 2100. It is the first century of the 3rd millennium.

  11. 21st century - Wikipedia

    en.wikipedia.org › wiki › 21st_century

    The world population was about 6.1 billion at the start of the 21st century, and reached 7.7 billion by January 2019. It is estimated to reach about 8.6 billion by the year 2030, and 9.8 billion by the year 2050.

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