Why is Roman Catholicism the largest religion in Lithuania?

Lithuania was the last pagan country in Europe, maintaining its traditional religion until the late 14th century. The adoption of Roman Catholicism as the dominant faith was a strategic political decision rather than a spontaneous conversion.1234

Facing significant military pressure from the Teutonic Order, the Lithuanian leadership sought a powerful ally to ensure the state's survival. In 1385, Grand Duke Jogaila chose to align with Poland rather than Moscow; this alliance required the formal adoption of Roman Catholicism. Consequently, in 1387, Jogaila officially introduced the faith to his subjects, and newly baptized nobles were granted extensive privileges patterned on Western feudal structures.3546

This transition integrated Lithuania into the Latin Christian world and culturally oriented the nation toward the West. Despite later periods of foreign rule and the Soviet promotion of atheism, Roman Catholicism has persisted as a defining element of Lithuanian identity, distinguishing the country from its Baltic neighbors.37