Versico has decided to analyze the GDPs (gross domestic product) of its candidate European countries. The Versico executives would like to grow their business in markets with highly populated cities that also generate high GDP.
The goal of the few exercises that follow is to select cities from the
cities data frame that are located in the countries with the highest GDPs. You will identify which country has the highest GDP in Eastern Europe and which country has the highest GDP in Western Europe.
You will then use the
cities data frame to retrieve a list of candidate cities from these two countries. The
countries_gdp data frame has already been prepared for you.