The Taboo 'Cut' From a New York Times news story on Ireland's entrepreneurial boom:

The change began when Ireland entered the European Union in 1973. In subsequent years, the government rewrote its tax policies to attract foreign investment by American corporations, made all education free through the university level and changed tax rates and used direct equity investment to encourage Irish people to set up their own businesses.

So Ireland experienced an economic boom after it "rewrote" tax policies and "changed" tax rates. We'll give you three guesses as to which direction tax rates moved, and one guess as to why the Times wasn't clear on the point.