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History · Grades 9–12

Events and centuries

Study guide for Grades 9 to 12: 2 worked examples and 2 practice questions. The years 1801 to 1900 make up the 19th century. Work out the year first, then convert it to a century.

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Rule and key idea

The years 1801 to 1900 make up the 19th century. Work out the year first, then convert it to a century.

century = ⌊(year − 1) ÷ 100⌋ + 1

Worked examples

In which century did this event take place? The Russian Revolution brought the Bolsheviks to power.

The Russian Revolution brought the Bolsheviks to power: 1917, in the 20th century.

the 20th century

In which century did this event take place? The Cuban Missile Crisis took place.

The Cuban Missile Crisis took place: 1962, in the 20th century.

the 20th century

Try two questions

  1. In which century did this event take place? The last spike of the Canadian Pacific Railway was driven.

    1. the 20th century
    2. the 18th century
    3. the 19th century
    4. the 17th century

  2. In which century did this event take place? The Persons Case ruled that women are “persons” under Canadian law.

    1. the 20th century
    2. the 21st century
    3. the 22nd century
    4. the 23rd century

Answers and reasoning

Answers and marking notes
  1. the 19th century

    The last spike of the Canadian Pacific Railway was driven: 1885, in the 19th century.

  2. the 20th century

    The Persons Case ruled that women are “persons” under Canadian law: 1929, in the 20th century.

How this page was made: written for StudyBrix with AI assistance from our own templates. Answers and worked examples are checked by automated tests, and grade bands are approximate, not an official curriculum alignment. See the editorial policy for corrections. Editorial policy