How do countries benefit from having a transnational company opening factories there?

With the importation and exportation of foods, Vehicles, And other items such as electrical goods, The quality of life can improve. This will be because their is a larger range and supply of the goods, Meaning their will be less problems getting the goods. None renewable resources such as Coal and Oil supplies can be improved, Due to the large importation from other countries such as Japan or within the EU, So their is no charge of International transportation. Transnational companies such as Oil companies, And even the Fast Food businesses will be able to transport supplies for their factories in other countries, That can also improve the business opportunities due to the large amount of goods available.