Metropolitan France was settled during the Iron Age by Celtic tribes known as Gauls before Rome annexed the area in 51 BC, leading to a distinct Gallo-Roman culture.

citation

Wikipedia contributors. (2024, March 5). France. In Wikipedia, The Free Encyclopedia. Retrieved March 7, 2024, from https://en.wikipedia.org/w/index.php?title=France&oldid=1211985823

Mexico (Wikipedia) Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers 1,972,550 km2 (761,610 sq mi), making it the world’s 13th-largest country by area; with a population of over 126 million, it is the 10th-most-populous country and has the most Spanish speakers. Mexico is organized as a federal republic comprising 31 states and Mexico City, its capital. Other major urban areas include Monterrey, Guadalajara, Puebla, Toluca, Tijuana, Ciudad Juárez, and León.

Gauls (Wikipedia) The Gauls (Latin: Galli; Ancient Greek: Γαλάται, Galátai) were a group of Celtic peoples of mainland Europe in the Iron Age and the Roman period (roughly 5th century BC to 5th century AD). Their homeland was known as Gaul (Gallia). They spoke Gaulish, a continental Celtic language.
In 58 BC Julius Caesar launched the Gallic Wars and had conquered the whole of Gaul by 51 BC.

France (Wikipedia) France (French: [fʁɑ̃s]), officially the French Republic (French: République française [ʁepyblik fʁɑ̃sɛːz]), is a country located primarily in Western Europe. It also includes overseas regions and territories in the Americas and the Atlantic, Pacific and Indian oceans, giving it one of the largest discontiguous exclusive economic zones in the world.