The reader learns from the given passage that:

Organized endeavors directed by people responsible for planning, organizing, leading and controlling activities have existed for thousands of years. The Egyptian pyramids and the Great Wall of China, for instance, are tangible evidence that projects of tremendous scope, employing tens of thousands of people, were undertaken well before modern times. The pyramids are a particularly interesting example. The construction of a single pyramid occupied more than 100,000 workers for 20 years. Who told each worker what to do? Who ensured that there would be enough stones at the site to keep workers busy? The answer to such questions is managers. Regardless of what managers were called at the time, someone had to plan what was to be done, organize people and materials to do it, lead and direct the workers, and impose some controls to ensure that everything was done as planned. Another example of early management can be seen during the 1400s in the city of Venice, Italy, a major economic and trade center. The Venetians developed an early form of business enterprise and engaged in many activities common to today's organizations. For instance, at the arsenal of Venice, warships were floated along the canals, and at each stop materials and riggings were added to the ship. Doesn't that sound a lot like a car "floating" along an automobile assembly line while components are added to it? In addition to this assembly line, the Venetians also used warehouse and inventory systems to keep track of materials, human resource management systems to manage the labor force, and an accounting system to keep track of revenues and costs.