He succeeded in promoting an agreement between Maria Theresa and Frederick.
He was especially concerned in promoting a non-partisan civil service.
Not only has scientific study advanced at the university of Buenos Aires, but scientific research is promoting the development of the country; examples are the geographical explorations of the Andean frontier, and especially of the Patagonian Andes, by Francisco P. Moreno.
In June 1775, with a view to promoting the union of the colonies, he seconded the nomination of Washington as commander-in-chief of the army.
It was Orduin who first abolished the onerous system of tolls on exports and imports, and established a combination of native merchants for promoting direct commercial relations between Sweden and Russia.