修改英语语法错误

What is management and how does it impact on an organization?
In modern society, it is widely believed that effective management is important for companies. It is claimed that management deeply impacts on organizations. Henri Fayol (1966), French, considered management consisting of seven functions: planning, organizing, leading, coordinating, controlling, staffing and motivating. This essay will discuss how management impact on an organization under four sections : define of management; four effects on management of an organization are planning, leading, staffing and motivating with famous example.
First of all, there are two major definitions in term of management. The first definition by the management authority Peter Drucker (1969) defined this as:‘ Organization and coordination of the activities of an enterprise in accordance with certain policies and in achievement of clearly defined objectives. Management is often included as a factor of production along with m