They were admitted to the EU only fifteen years after the fall of communism, and not all of them had previous experience with democracy. Unlike EU members admitted during earlier rounds of enlargement, the Central Europeans suffer from widespread corruption, political nepotism, fragile political parties with unclear identities, and weak civil societies.
为什么这一历史性的事件会引起如此大的政治巨变？有一些人认为，这些国家本来就不稳定，它们的政治文化也不成熟。它们被欧盟接纳仅仅15年，是在共产主义垮台之后。它们中不是所有国家先前都有民主的经验。和那些早期的欧盟扩大成员国不同，中欧遭遇过大范围腐败、政治裙带关系、身份不明的脆弱政党和软弱的民间社会等问题。