Conflict can occur between individuals and groups for several reasons. There are three main types of conflict: intrapersonal, interpersonal, and intergroup. Common causes of conflict include scarce resources, differing attitudes and values, disagreements over goals and priorities, poor communication, inadequate organizational structure, lack of teamwork, and unclear roles and responsibilities. Proper team development and effective factors like task, individual skills, and team processes can help minimize conflict and build cooperation. Managing conflict involves approaches like collective bargaining and conciliation, which aims to develop goodwill and friendliness between disputing parties.