Possibly overpopulation, and possibly lack of funds for the country to buy the food for the inhabitants, despite spare food in neighbouring countries. If a country has a huge debt, it will pay that off rather than paying to import extra food.
drought
Yes in some countries
Food Shortages Started in 1915 In Russia
Because ships were being struck down, less food could be imported from other countries, resulting in food shortages.
FOOD shortages caused unrest.
During a famine there are shortages of food. The storm damage had led to shortages of electricity in some areas of the country.
food shortages and excessive military spending
So there would be more food to go around as there were shortages due to food not being able to be transported to different countries.
Food insecurity is the condition in which people live with chronic hunger and malnutrition. The countries with the greatest food shortages have some of the highest TFRs.
Because of shortages.
people in the cities demonstrated over food shortages
in countries that have been affected by global warming catastrophes and also the less fortune countries
Food shortages and heavy casualties during World War I