Christian missionaries (London Missionary Society, Methodists, Catholics) arrived in Samoa from the 1830s, catalyzing profound changes:
Near-total conversion to Christianity; traditional polytheism largely replaced. Church became village center.
Established schools; developed written Samoan (Latin script); translated Bible; high literacy achieved early.
Introduced Western dress, gender roles, monogamy, nuclear family ideals; suppressed some traditional practices (tattooing, certain dances).
Brought Western medicine; hospitals, clinics; reduced mortality from introduced diseases.
Built churches, schools, printing presses, ports.
Advocated for Samoan self-governance; mediated colonial disputes; influenced 1889 Berlin Act, 1899 Tripartite Convention.
Documented oral traditions, language, genealogy; some missionaries supported fa'a Samoa (Samoan way) within Christian framework.
Impact was complex: loss of some heritage, but also tools for cultural survival and modern nationhood.