Epoch-making

Equally to be expected, in view of the trend of Government legislation and pronouncements over the past few years—but no less epoch-making for that—is the proposal that the railways and canals shall cease to be common carriers and be entirely free to fix their own passenger and freight charges, [...].

The prime minister, Tony Blair, described the terrorist attacks on America as having "epoch-making proportions" as parliament was recalled for an emergency session today.