 Complete the following phrase:  However, Portuguese rule remained characterized by deep-seated racism, mass forced labour, and an almost complete failure to modernize the country. By 1960, after 400 years of colonial rule, there was not a single university in the entire territory. To counter this lack of education facilities, overtly political organizations first appeared in the 1950s, and began to make organized demands for human and civil rights, initiating diplomatic campaigns throughout the world in their fight for independence. The Portuguese regime, meanwhile, refused to accede to the nationalists demands for independence, thereby provoking the armed conflict that started in 1961 when guerrillas attacked colonial assets in cross-border operations in northeastern Angola. The war came to be known as the 