Tropico 6

I would recommend playing on easy unless you are very good at the Tropico games.
You are given two islands with limited space to build on, and limited resources. I would recommend building mines on the south island to collect the Nickle, Iron and Coal. You would then want to build the Steel Factory then the Weapons Factory, as more complex goods sell for much higher.
As part of the story missions you have to build four pirates coves. Once you have beaten back an invasion I recommend removing three of them to save money, but keep the guard towers you have to build.
Part of the final mission is to have $100k. Once you get close to $50k research the edict that will give you $50k when implemented. Use the edict when you have at least $50k and you will win the mission.