What is meant by 'dukkhe loko patiṭṭhito'?

In SN68 Pihitasutta ; > Kenassu pihito loko, > kismiṁ loko patiṭṭhito; > Kenassu uḍḍito loko, > kenassu parivāritoti. > > Maccunā pihito loko, > dukkhe loko patiṭṭhito; > Taṇhāya uḍḍito loko, > jarāya parivāritoti. Translation : > By what is the world shut in? > On what is the world established? > By what is the world ensnared? > By what is it enveloped?” > > “The world is shut in by death; > The world is established on suffering; > The world is ensnared by craving; > It is enveloped by old age. What is meant by 'dukkhe loko patiṭṭhito'? **why is it said that *"The world is established on suffering?"*** ---- EDIT: The same is repeated in, SN67 Uḍḍitasutta which may be much clearer. > Kenassu uḍḍito loko, > kenassu parivārito; > Kenassu pihito loko, > kismiṁ loko patiṭṭhitoti. > > Taṇhāya uḍḍito loko, > jarāya parivārito; > Maccunā pihito loko, > dukkhe loko patiṭṭhitoti. Translation > By what is the world ensnared? > By what is it enveloped? > By what is the world shut in? > On what is the world established?” > > The world is ensnared by craving; > It is enveloped by old age; > The world is shut in by death; > The world is established on suffering.