The Online Library of Knowledge

LET'S EXPLORE American history

A timeline of American history

When a date has "c." in front of it, for example c.3100 BC, it means the date is approximate. We do not know exactly when the event took place (c. stands for circa, the Latin word for “about”).

BC = Before Christ. It is the same as BCE (Before the Common Era)

AD = Anno Domini, meaning "The Year of Our Lord". It is the same as CE (Common Era)

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