Which sentence states a fact?
The American Revolution went on for too many years. Thousands of people were injured during the American Revolution.
A fact is something that can be proved true by research or observation.
George Washington became president of the United States in 1789.
This statement is a fact. It can be proved by researching what year George Washington was inaugurated president.
An opinion is something that a person believes, thinks, or feels. An opinion can be supported by evidence, but it cannot be proved true.
George Washington was a better president than Thomas Jefferson.
This statement is an opinion. People can have different ideas about what makes someone a "better" president, so the statement cannot be proved.
The first sentence states a fact.
Thousands of people were injured during the American Revolution.
It can be proved by researching how many people were injured during the American Revolution.
The second sentence states an opinion.
The American Revolution went on for too many years.
Too many shows what a person believes, thinks, or feels. Another person might have a different opinion about how many years is too many.