What is the relationship between hamm, nagg, & nell?

In Samuel Beckett´s play, Endgame, one of the most renowned works by the famous 20th century Irish writer, we meet the strange character, Hamm, who is unable to stand up and lies in a wheelchair, attended on by his servant, Clov. Nagg is Hamm´s father and Nell his mother, and they both live in dustbins and recurrently in the play they open the dustbins to ask for food or to talk to each other.

the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.

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