Which preposition to use with amalgamate

with Occurrences 29%

As the Turks did not try to convert the conquered to Islamthe Koran forbids proselytism by forceand to nationalize them, the subjected and ill-treated alien masses never amalgamated with the ruling Turks, but always strove to regain their liberty by rebellion.

into Occurrences 5%

By this treaty Austria was to cede Lombardy to Napoleon, who was to relegate it to Sardinia; the Italian States were to be amalgamated into a confederation, under the Presidency of the Pope, but Venice, though forming part of this same confederation, was to remain under Austrian rule.

by Occurrences 2%

The races will be quite as effectively amalgamated by lightening the Negroes as they would be by darkening the whites.

from Occurrences 2%

But it appears that the different integral parts of the nation were amalgamated from deep-formed designs for their mutual benefit.

like Occurrences 2%

One day, before long, the seven nations, which combine in themselves the whole of humanity, will join together and amalgamate like the seven colors of the prism, in a radiant celestial arch; the marvel of Peace will appear eternal and visible above civilization, and the world, dazzled, will contemplate the immense rainbow of the United Peoples of Europe.

Which preposition to use with  amalgamate