Catalonia, which is the largest state in Spain, will hold a plebiscite on secession on November 25th, 2012. It is going to be conducted under the auspices of the central government of Spain which is dealing with a serious financial crisis. Secession means a region or group separating from a country or a larger group. Catalonia which is proud of its distinctive culture and linguistic heritage has desired independence for hundreds of years. The GRDP (Gross Regional Domestic Product) of Catalonia represents 20% of Spain’s total GDP (Gross Domestic Product), which is about 200 billion euro. Catalonia has continuously complained to the central government that taxes are too heavy on them. As a result, the citizens of Catalonia have insisted on their independence from the central government this year more strongly than ever. The result of the plebiscite on secession would not be binding if Spain as a nation opposes it, and the antagonistic relationship between Catalonia and the central government will continue.