No, there are no Dowry prohibition officers in Mumbai. But the Dowry is illegal if complained about.
Consult a divorce attorney for your state's laws. Most states have a provision to divorce a spouse who's absent or whose exact address is unknown. In many cases, you have to attempt to find them (to have papers served) by advertising in a local paper. The same procedure as if the person were living in the same country/state where the other spouse wants to file the divorce. The spouse wanting the dissolution of the marriage simply follows the procedures required under the laws of the state in which he or she lives.
Yes, with parental permission.
I do not think they can. I doubt that the state (or the country) will recognized the marriage of two illegal immigrants who married in another country. After all as far as the government is concerned "they are not here."
Yes. All states in the U.S. recognizes all legal marriages regardless of the country (or state) in which they were made. >>>>>>Yes, as long as the marriage is documented and you are only married to ONE wife. Bigamy and Polygamy are illegal in the US.