Why are different poverty lines in different countries?

The minimum basic needs of the different countries are different for the countries. This is because the development that is taking place in the economy. Countries use a variety of poverty line because

a) The calorie requirements of the human are different depending on their physical condition and dietary habits. In the developed countries the condition of the calorie requirement will be higher compared to the under developed and developing countries.

b) The per capita income differs from country to country. That is per capita income in the developed countries will be higher per capita income, and it will be lower in under developed countries.

c) The standard of living differs from countries. Western countries will have a higher standard of living since they are developed than the African countries.