As you can see here it becomes tedious to continually write long table names in joins. This is when it becomes useful to alias each table using the first letter of its name (e.g. countries AS c)! It is standard practice to alias in this way and, if you choose to alias tables or are asked to specifically for an exercise in this course, you should follow this protocol.
Now, for each country, you want to get the country name, its region, and the fertility rate and unemployment rate for both 2010 and 2015.
Example: