by; elimination vs. eliminating; come about

[Klpno]

Hello everyone,

I'd like to ask some things regarding the following text:

Thus, all institutional deformations that impede the formation of an independent judicial power in the Republic of XXX can be divided into simple and complicated. Both of these deformations are divided, by a historical criterion, into Soviet and post-Soviet. By using “from the simple to the complex” principle which to some extent corresponds to an optimal program of the judicial reform with its division into short-term and long-term prospect we first will consider concrete post-Soviet simple deformations of the XXX judicial-legal system, then – its simple Soviet deformations to dwell on the most fundamental, in our opinion, complex deformations (post-Soviet and Soviet) without elimination of which an independent judicial power in Uzbekistan hardly can come about.

1. by a historical criterion - is 'by' a correct preposition to use meaning 'according to'?
2. without elimination of which or without eliminating of which - which one is correct?
3. Is come about a correct phrase to use meaning "hardly can be created"?

[Morris]

1. by a historical criterion - is 'by' a correct preposition to use meaning 'according to'?

Yes. Although criteria (plural) may have read better.

2. without elimination of which or without eliminating of which - which one is correct?

without the elimination of which:

3. Is come about a correct phrase to use meaning "hardly can be created"?

Yes, except ‘could have come about’ would have been better,

[Klpno]

Thank you very much, Morris.