Hi Meg, that's the case in many African countries, people have no claim to the land, corrupt government leases large swath of lands to Chinese or european companies which drive the locals off into villages withe the promise of education and healthcare which rarely comes. Not a situation to strive for in my opinion.
Shivam, there is an organisation called WWOOF, it's a website for organic farmers and volunteers to find each other. In the destination section, you can chose out of all the countries and then surf to those countries WWOOFF sites. Maybe by looking at the pictures there you could find a place where it looks nice to you. A picture says more then words many times. When you chose a country you can always ask here again to come into contact with permaculturalists from that country. And later plan to travel to that country.
WWOOF
There are other sites like this too, although i'm only familiar with this one.
Hope this helps!