Facebook was fined €1.2 million Monday by Spain’s data protection watchdog for breaking the country’s privacy rules, the latest in a series of legal problems that have beset the social networking giant in recent years. As part of its ruling, the Spanish data protection authority said that it found three instances in which Facebook had collected personal data on its millions of users in the European country without informing them how such information would be used. “Facebook’s privacy policy contains generic and unclear terms,” the authority said in a statement.