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led to the flourish (word form is not accurate) of many modern
there is (a) problem of
un built (unbuilt) land area
decrease (shortage) in un built land area,
hosing (housing) projects
which involves (involve) building of apartments in
modern houses all bears the same look. (all modern houses)
its dweller(s)
hence takes (take) away the dependency
(In conclusion)It is unfortunate that one has to let go of cultural heritage
conclusion should give an indication on reasons as well
second part of the question (opinion) needs more explanation
keep writing!!