What does the phrase “a beautiful potpourri of differences” mean?

pot·pour·ri

/ˌpōpəˈrē/

noun

a mixture of dried petals and spices placed in a bowl or small sack to perfume clothing or a room.

a mixture of things, especially a musical or literary medley.

Therefore, the phrase "a beautiful potpourri..." or mixture "...of differences" means that whatever this line is referring to is a pleasant mixture of many different things.

Hope this helped.

industrialization in great britain began with the global 'industrial revolution', a pioneer. industrialization in russia was the last in europe, a laggard.

great britain’s industrialization was driven by individual citizens, while russia’s was guided by the government.