The southern US has a long history with slavery which was not abolished until 1865.

The world of Islam also has a long history of slavery going back 1500 years. It was also largely abolished in the 1800's following the leadership of British abolition in the early 1800's. However ISIS and other extremist Muslim groups continue the practice. Muslim states which function under Sharia law to this day practice functional slavery when it comes to women, the LGTBQ community, religious minorities and some immigrant worker communities.

In China although officially abolished in the early 1900's there are millions of functional slaves to this day.  Overall there are 167 countries in the world which practice modern functional slavery. there are approx 45 million functional slaves in the world today.

Anyone blaming this on Donald Trump needs to take a hard long look in the mirror.

Here, educate yourself. https://www.globalslaveryindex.org/