Nevertheless a scientific character was so adroitly assumed that scientific men - some of them even ornithologists - have thence been led to believe the text had a scientific value, and that of a high class.
Stephen contrived to hold his own by adroitly contracting an alliance with the powerful Neapolitan Angevins who had the ear of the pope; but Ladislaus (q.v.) was so completely caught in the toils of the Kumanians, that the Holy See, the suzerain of Hungary, was forced to intervene to prevent the relapse of the kingdom into barbarism, and the unfortunate Ladislaus perished in the crusade that was preached against him.
At the congress of Vienna (1814-15) for the settlement of European affairs, Talleyrand, as the representative of the restored house of Bourbon in France, managed adroitly to break up the league of the Powers (framed at Chaumont in February 1814) and assisted in forming a secret alliance between England, Austria and France in order to prevent the complete absorption of Poland by Russia and of Saxony by Prussia.
There was, for instance, Mendovg (1240-1263), who submitted to baptism for purely political reasons, checkmated the Teutonic Knights by adroitly seeking the protection of the Holy See, and annexed the principality of Plock to his ever-widening grand duchy, which already included Black Russia, and formed a huge wedge extending southwards from Courland, thus separating Poland from Russia.
He successfully thwarted all the schemes of the emperor Sigismund, by adroitly supporting the revolutionary party in Bohemia.