The unification of the railways caused greater difficulties.
Poulton as the unification of warning colours.
Of it - affected it a good deal during the French Revolution and the events which led up to the unification of Italy.
Or again, the process of scientific induction is a threefold chain; the original hypothesis (the first unification of the fact) seems to melt away when confronted with opposite facts, and yet no scientific progress is possible unless the stimulus of the original unification is strong enough to clasp the discordant facts and establish a reunification.
But this attempt at unification was reckoned to Berengar for a crime.