Multinational corporations (MNCs) are organizations that control production in multiple countries and are characterized by their large size, economic dominance, and headquarters in their home countries. They benefit from access to a wider consumer base, cheaper labor, favorable tax policies, and technological advancements, but also pose risks such as political threats to host nations, harm to local businesses, and depletion of natural resources. Additionally, MNCs can lead to significant capital outflows from host countries, affecting local economies.