Public speaking is a process of making a speech before an audience. It evolved from democracy in Athens and the development of rhetoric and oratory. Key aspects of effective public speaking include ethos, logos, pathos, preparation, practice, and performance. When giving a speech, speakers should smile, speak loudly, relax, know their audience, be confident, gain attention, and wrap up on time. Business leaders need strong public speaking skills to communicate goals, motivate employees, and represent their organization effectively.