Disease, warfare and harsh enslavement contributed to the depopulation. Ronda was heavily affected by the Spanish Civil War, which led to emigration and depopulation. The famine marked the beginning of the depopulation of Ireland in the 19th century. Along with depopulation came social unrest and endemic warfare. However, depopulation from plague and war ensued. The depression also accelerated Britain's rural depopulation. A local recession in the 1920s caused a temporary depopulation of Grande Prairie. Another action taken during the forced depopulation was to massacre the residents' pets. The United States is thrown into chaos as the Syndicate plan for depopulation gets underway. Early critics also questioned the validity of Goldsmith's argument about rural depopulation and decline. As a result of the depopulation, Norman landowners sought settlers to work in the fields. The Protestant depopulation in the Republic of Ireland during 1891-1991 was dramatic. However Siberian experience was very different, as settlement was not resulted to dramatic native depopulation. This eventually led to the severe depopulation of the town by the 1970s. Modern historians have come to the conclusion that the New Forest depopulation was greatly exaggerated.