The American Ceylon Mission (ACM) to Jaffna, Sri Lanka started with the arrival in 1813 of missionaries sponsored by the American Board of Commissioners for Foreign Missions (ABCFM). Although they had originally planned to work in Galle, the British colonial office in Ceylon restricted the Americans to out-of-the-way Jaffna due to the security concerns of the British who were warring with France at the time.[1] The critical period of the impact of the missionaries was from the 1820s to early 20th century. During this time, they engaged in original translations from English to Tamil, printing, and publishing, establishing primary, secondary and tertiary educational institutions and providing health care for residents of the Jaffna Peninsula. These activities resulted in many social changes amongst Sri Lankan Tamils that survive even today. They also led to the attainment of a lopsided literacy level among residents in the relatively small peninsula that is cited by scholars as one of the primary factors contributing to the recently ended civil war. Many notable educational and health institutions within the Jaffna Peninsula owe their origins to the missionary activists from America. Missionaries also courted controversy by publishing negative information about local religious practices and rituals.