1. Henry Mintezberg's Managerial Role:

Henry Mintezberg's managerial roles based on the concept that managers are engaged in interpersonal informational & decisional roles. In the end, decisional roles involve the allocation of resources, engaging in negotiations on behalf of the group.

2. Frederick Winslow Taylors's Scientific Management Theory :

Frederick Winslow Taylor's Theory is an important because it's approach to management is found in almost every industrial business operation across the world. Its influence is also felt in general business  practices such planning, process design, quality control, cost accounting.

3. Henri Foyol's Principle of Management :

Principle of Management xan be viewed as an effort mde for accomplishing the organisational goaks, objectives and vision through planning, organising,  staffing, directing and controlling all the business activities accordingly.

4. Abraham Maslow's Hierarchy Theory :

Maslow's hierarchy of needs is a motivational theory in psychology comprising a five-tier model of human needs, often depicted as hierarchical levels within a pyramid. From the bottom of the hierarchy upwards, the needs are: physiological (food and clothing), safety (job security), love and belonging needs (friendship), esteem, and self-actualization.

5. Mc Gregor's Theory X and Theory Y:

Theory X and Theory Y are theories of human work motivation and management.Theory X explains the importance of heightened supervision, external rewards, and penalties, while Theory Y highlights the motivating role of job satisfaction and encourages workers to approach tasks without direct supervision.