Poland A and B refers to the historical, political, and cultural distinction between the western and the eastern part of the country, with Poland "A", west of the Vistula, being much more developed and having faster growth than Poland "B", east of the river. The General Secretary of the Polish Chamber of Commerce Marek Kłoczko said in his 2007 interview that the divisions are more spread out and forming three separate categories:Poland "A" are the metropolitan cities; Poland "B" is the rest of the country; and Poland "C" are the plains and the landscape parks east of the Vistula, which require a different treatment.