A multinational corporation (MNC) is a company that has a presence in its home country and at least one other country. In the case of large MNCs, its assets, factories, and various facilities are spread across the globe. Being so globally distributed, the company can more efficiently conduct business in multiple countries, allowing it to serve not only those countries but surrounding regions.
For investors, MNCs offer diversification. Should one country experience political unrest or more restrictive regulations/laws, the MNC is able to shift assets and operations to other more favorable areas. A single company operating within an adverse country will have more difficulty under such conditions.