How French Became Spoken in Belgium

French became dominant in southern Belgium (Wallonia) and Brussels through centuries of political, cultural, and economic forces:

1. Burgundian & Spanish Rule (14th–17th c.): French was the court language of the Dukes of Burgundy and later the Spanish Habsburg administration in the Low Countries.
2. French Annexation (1795–1815): Revolutionary/Napoleonic France annexed Belgium, imposing French as the sole official language, replacing Dutch and dialects in law, education, and administration.
3. Cultural Prestige (17th–19th c.): French was Europe's lingua franca of diplomacy, literature, and high society. Belgian elites adopted it for status.
4. Economic Ties: Strong trade with France favored French in commerce and industry.
5. Geographic Proximity: Border with France enabled constant cross-border interaction.
6. Education: 19th-century Belgian universities and elite schools used French, cementing it as the language of the educated class.

Result: French is co-official (with Dutch) in Belgium today, dominant in Wallonia, Brussels, and among the upper classes historically.