Multinational corporations (MNCs) operate in multiple countries, with headquarters in the home country but branches in host countries. MNCs have huge assets and turnover from global operations, and control subsidiaries through centralized management. They can benefit host countries by generating employment, investing capital, utilizing resources, and transferring technology. However, MNCs also pose risks like threatening domestic industries, repatriating profits abroad, and potentially undermining political independence. Home countries gain from access to cheaper labor and wider markets abroad, though they also face challenges of managing cultural diversity and international competition.