The DRC is a vast, mineral-rich nation with an estimated population of about 75 million people and an area that is roughly one-quarter the size of the United States, according to the UN. Since its independence in 1960, the DRC has undergone political upheaval, including a civil war, according to State. In particular, the eastern DRC has continued to be plagued by violence often perpetrated by illegal armed groups and some members of the Congolese national military against civilians.