Во многом благодаря этим особенност

Во многом благодаря этим особенностям русского менталитета произошло присоединение Сибири к России и других земель.

Результаты (английский) 1:

Thanks to these features of Russian mentality was the accession of Siberia to Russia and other lands.

Результаты (английский) 2:

Largely due to these features of Russian mentality was joining Siberia to Russia and other lands.

Результаты (английский) 3:

Largely because of those characteristics of Russian mentality happened accession Siberia to Russia and other lands.