We stay in Latin America this week but head north of Colombia to Mexico.
With the collapse of the two main Colombian cartels, much of that business was usurped by their former junior partners in Mexico.
Mexican cartels had a long history of smuggling drugs into the US, mostly marijuana and heroin.
It also has the advantage of sharing one of the longest international borders with the US, home of the biggest drug market in the world.
This week write 600 or more words on Joaquin Guzman Loera.
Concentrate on Guzman’s rise through the drug world, establishment of the Sinaloa Cartel as the leading supplier and his current difficulties.