I've done some work with data on International Commerce. Here I present a document with the connections between countries.
Description of the plots
Each plot represents the percentage of imports (in red) and exports (in blue) that the first country has with the second, regarding all the imports and exports that the first country has.
Data is from the Direction of Trade Statistics of the IMF. Here I have selected Latin American and OECD countries.
A bit of programming
More details about the original data, the process and the details of the selection of countries can be found at the program that processes the information and stores it into a database. This script has been written in Perl.
The process of doing the plots can be seen in the folliwng code in R.