Times, Wars, and Agreements


Rule 9.1: Use the definite article with periods of time.


The 1960s where a period of great change in the United States.
Life wasn’t easy during the Dark Ages.
The 16th century can be characterized by global exploration and scientific development.


Rule 9.2: Use the definite article with the names of wars, battles, and revolutions.


Not many people died during the Cold War, but it was a very tense time.
The American Revolution began in 1776 and ended in 1789.
Many people know the Battle of Thermopylae from the movie 300.


Exception to Rule 9.2: Do not use the definite article World War 1 and World War 2.


World War 1 changed the map of Europe forever.
There has not been a major war between the major superpowers since the end of World War 2.


Rule 9.3: Use the definite article with the names of treaties, alliances, organizations, reports, and agreements.


The Treaty of Ghent ended the War of 1812 between the United States and Great Britain.
The Organization of Petroleum Exporting Countries is better known as OPEC.
The Korean Armistice Agreement created a ceasefire; it did not end the Korean War though.


Exercise 1: Fill in the blanks with a, an, or the.