The purpose of this final paper is to point out the problems of corruption, with an emphasis on our country, on the damage it causes to the development of each country. The final paper consists of nine chapters. In the first chapter corruption is defined by various experts, the World Bank and Transparency International, but also by great thinkers and philosophers of the Ancient and Middle Ages. It is also described the history of corruption from its earliest days. In the second chapter different views on corruption are described. The third part of the paper deals with the manifestations of corruption, while the fourth explains the negative effects of corruption that are harmful to any society. The fifth part of the paper deals with measuring the perception of the presence of corruption and the research conducted for that purpose, such as the Corruption Perception Index and the Global Corruption Barometer, conducted by Transparency International, the Corruption Control Index, conducted by the World Bank, and the Freedom House NGO research project, which examines the state of democratic institutions in post-socialist countries. Chapter six deals with the fight against corruption, the specification of importannt anti- IV corruption strategies of the 20th century as stated by Professor Derenčinović, and the specification of bodies founded within the EU and Croatia, as well as regulations adopted for the most effective fight against corruption. Chapter seven deals with the corruption in transition countries and the last one with corruption within the EU.