This report provides an in-depth analysis of international business, highlighting the crucial role of cultural distance in shaping business strategies and outcomes. It begins by exploring the concept of cultural distance, defining it as the difference between the home country's culture and the host country's culture, and its impact on international trade, foreign investments, and cross-border collaborations. The report delves into the challenges posed by cultural differences, such as increased transaction costs, communication barriers, and the need for businesses to adapt to diverse cultural values and practices. The report also examines the impact of cultural distance on international businesses, including the need for in-depth research on host countries, the importance of employee adaptability, and the influence of managerial perceptions on business performance. Finally, it provides a case study of McDonald's internationalization to illustrate how cultural distance affects business expansion and success in global markets. This report is a valuable resource for students studying international business and related fields.