Can you see the forest for the trees
Like many documentaries, the people and places are dressed up as to not offend that peoples culture. Due to hunger and oppression some people still choose slavery as a way out.

slavery still exists. See for yourself
This ninety minute documentary, filmed in 1964 and released on video in 1982, contains a remark at the beginning of the video that the slavery shown in the film still exists. The film proves its point. The filmmakers actually buy two African women from an African slave trader for 300 pounds apiece. They also show female slaves being bargained for in Saudi Arabia. Not all of the slaves are African.

Most slavery, as it has for centuries, originates in Africa and ends in Arabia.

A fictional dramatization of the problem exists in the movie Ashanti, to which a number of big Hollywood stars lent their names and their presence, including Michael Caine, Peter Ustinov, William Holden, Rex Harrison, and Omar Sharif.