1792–1803: Denmark became the first European nation to formally take legislative action against the slave trade, passing an outlawing act in 1792.

1792–1803: Denmark became the first European nation to formally take legislative action against the slave trade, passing an outlawing act in 1792. This landmark ban did not take full effect until 1803, reflecting the two-stage process of abolition that most Atlantic nations would eventually follow. The Danish move preceded similar bans by Great Britain and the United States by over a decade, signaling the beginning of a shift in international moral standards. However, the effective suppression of the trade would require decades of further international legal struggle and naval enforcement.