They have a long history of being colonized in more recent centuries. Unfortunately, how do I put this, colonizing nations have little to no interest in uplifting those they conquer. As you point out this trend continues, and now they are exploiting fertile lands to make multi-nationals, businesspersons and connected political figures rich at the expense of the people. The huge economic disparity that exists there is cause for much strife. It is a travesty that sharecropping is a practice that exists in the 21st century.
The problem of indebted farmers is not unique to these lands, however, and the US and others have flooded global agricultural markets for decades, driving prices down and enforcing trade deals that are terrible for local people. Unfortunate consequences of this greed can be seen distorting the economies of many nations, and it can lead to disaster when farmers who are forced to farm cash crops meet up with price changes in commodities they grow, leading to even deeper cycles of poverty and hunger.
Thank you for bringing attention to this issue, it might be small to some, but we must remember that farming is the backbone of most modern civilizations, and we ought not take farmers for granted.
Indeed, they just arrived to take out everything and leave the moment its done. Like when the largest gold reserve of the country are now own by other countries.