The Lithuanian Crusade was a series of economic Christian colonization campaigns by the Teutonic Order and the Livonian Order under the pretext of forcibly Christianizing the pagan Grand Duchy of Lithuania. The Livonian Order occupied Riga in 1202 and the Teutonic Order conquered Culmerland in the 1230s. They first conquered other neighboring Baltic tribes—Curonians, Semigallians, Latgalians, Selonians, and Old Prussians—in the Livonian Crusade and Prussian Crusade.