Help Please!!!? Does anyone the answer?

Question

Many asian countries have "-stan" ending in their name ( Pakistan , Afghanistan , Turkmenistan , Tajikistan , ....). What does "-stan" stand for?

Also the ending "-abad" in the names of some cities in India and Pakistan ( Islamabad , Mohammadabad , Allahabad ,....) what does it stand for? Thank you!!

Answer 1

...stan is a persian suffix means home of/ place of

Answer 2

The suffix -stān (spelled ـستان in the Perso-Arabic script) is Persian for "place of", derived from the Indo-Aryan equivalent, -sthāna (pronounced [st̪ʰaːna] (स्थान in the Devanāgarī script), a cognate Sanskrit suffix with a similar meaning. In Indo-Aryan languages, sthāna is also used as a word to mean "place".

http://en.wikipedia.org/wiki/-stan

"-ābād" is Persian for "to construct" or "to create"(opposite of "barbad", or "to destroy").

http://en.wikipedia.org/wiki/Allahabad