campaign for self-government. Land League Mass nationalist mobilisation began when Isaac Butt's Home Rule League (which had been founded in 1873 but had little following) adopted social issues in the late 1870s – especially the question of land redistribution. Michael Davitt (an IRB member) founded the Irish Land League in 1879 during an agricultural depression to agitate for tenant's rights. Some would argue the land question had a nationalist resonance in Ireland as many Irish Catholics believed that land had been unjustly taken from their ancestors by Protestant English colonists in the 17th-century Plantations of Ireland. Indeed, the Irish landed class was still largely an Anglo-Irish Protestant group in the 19th century. Such perceptions were underlined in the Land league's language and literature. However, others would argue that the Land League had its direct roots in tenant associations formed in the period of agricultural prosperity during the government of Lord Palmerston in the 1850s and 1860s, who were seeking to strengthen the economic gains they had already made. Following the depression of 1879 and the subsequent fall in prices (and hence profits), these farmers were threatened with rising rents and eviction for failure to pay rents. In addition, small farmers, especially in the west faced the prospect of another famine in the harsh winter of 1879. At first, the Land League campaigned for the "Three Fs" – fair rent, free sale and fixity of tenure. Then, as prices for agricultural products fell further and the weather worsened in the mid-1880s, tenants organised themselves by withholding rent during the 1886–1891 Plan of Campaign movement. Militant nationalists such as the Fenians saw that they could use the groundswell of support for land reform to recruit nationalist support, this is the reason why the New Departure – a decision by the IRB to adopt social issues – occurred in 1879. Republicans from Clan na Gael (who were loath to recognise the British Parliament) saw this as an opportunity to recruit the masses to agitate for Irish self-government. This agitation, which became known as the "Land War", turned increasingly violent when Land Leaguers resisted attempts by the Royal Irish Constabulary (RUC) to evict tenant farmers by force. This upheaval eventually resulted in the British government subsidising the sale of landlords' estates to their tenants in the Irish Land Acts authored by William O'Brien. It also provided a mass base for constitutional Irish nationalists who