The Kru, Kroo, Krou or Kuru are a West African ethnic group who are indigenous to western Ivory Coast and eastern Liberia. They migrated and settled along various points of the West African coast, notably Freetown, Sierra Leone, but also the Ivorian and Nigerian coasts. The Kru people are a large ethnic group that is made up of several sub-ethnic groups in Liberia and Ivory Coast. These tribes include Bété, Bassa, Krumen, Guéré, Grebo, Klao, Dida, Krahn people and, Jabo people. During the Atlantic slave trade, Kru people were considered more valuable as traders and sailors on slave ships than as slave labor. To ensure their status as “freemen,” they initiated the practice of tattooing their foreheads and the bridge of their nose with indigo dye to distinguish them from slave labor. Part of the Grebo people were called Krumen and hired as free sailors on European ships, initially engaged in the slave trade, and then when that ended in the coastal trade in goods. The Krumen were famous for their skills in navigating and sailing the Atlantic and the homophony with crewmen was noted. Their maritime expertise evolved along the west coast of Africa where they made a living as fishermen and traders. Knowing the in-shore waters of the western coast of Africa, and having nautical experience, they were employed as sailors, navigators and interpreters aboard slave ships, as well as American and British warships used against the slave trade. The Kru history is one marked by a strong sense of ethnicity and resistance to occupation. In 1856 when part of Liberia was still known as the independent Republic of Maryland, the Kru along with the Grebo resisted Maryland settlers' efforts to control their trade. They were also infamous amongst early European slave raiders as being especially averse to capture. Demographics of Ivory Coast#Ethnic groups The Kru are one of the many ethnic groups in Liberia, comprising 7% of the population. Theirs is also one of the main languages spoken.