Zimbabwe is a country with a rich history, dating from the early San hunter-gatherer societies. The arrival of British imperial rule in 1890 impacted the country tremendously, as the European rulers developed and exploited Zimbabwe's resources, which gave rise to a movement of African nationalism and demands for independence. This process culminated in the armed conflict of the 1960s and 1970s, a war of liberation that ended with Zimbabwe's independence in 1979. The 1990s were marked by economic decline and the rise of opposition politics. In 1999, Mugabe and his party embarked on a violent and chaotic land reform program that disrupted the country's prosperous agricultural sector and plunged the nation's economy into a downward spiral. Political violence and human rights violations made Zimbabwe an international pariah state, with struggles continuing to this day.