Mexico enters the Second World War on the side of the Allies.

The history of Mexico spans over three millennia, with the earliest evidence of hunter-gatherer settlement 13,000 years ago. Central and southern Mexico, known as Mesoamerica, saw the rise of complex civilizations that developed glyphic writing systems to record political histories and conquests. The Spanish conquest of the Aztec Empire in the early 16th century established New Spain, bringing Spanish rule, Christianity, and European influences.