Several occasions people don't know why poor people can never be erased from street of developed, developing and under develop countries because there are some trace of issues that keep people in poverty but firstly in 2008 growing up I ask my father why is poor, he said the father do not make proper planning him and his siblings but I have grown and the poverty is still there, so I went to him again and I said father now that you're a father to us now why are we your children still poverty? And he say because he did not also train us well, so I say which mean you too do not make proper planning for us your children but we could not arrived at any answers or conclusion because those things are not the real cause. If you do not give your children formal education give them home training, religion training and counseling, as they grew up they will quickly understand responsibilities and they will think inline with what they've. Lack of ideas is the most reason for poverty, not money. If you have $3000 without ideas you will beg after 6 months.
Some cases family traditional background pursues children's destinies unknown to them, so no matter how they struggle nothing to show and before you realizes your age is gone and you end up becoming a parents to other children in poverty...training children early and give them responsibilities it will help them to task an ideas.
Most likely this topic doesn't belong to the economic board since it is based on societal occurrences that lack any statistical tool to analyze on, so you have to move the thread to politics and society.
Now back to your question as to why people are poor, or why there generational lineup of poverty in some societies, families or communities, the answer is not far from what your father told you being lack of education is the major factor because information their say is power and at that, once one person contacts the right information, it enough to light out generational poverty, and again even though your parent didn't have the opportunity to give you the right education, it can only limit you for a while but as an adult, you take your future into your hand by building and acquiring the right education that works inline with global economic realities this way you can easily break the chain of poverty.