Complex sentence: After the Second World War the distillery was bought by Isaac Wolfson, and in 1972, it was taken over by Irish Distillers, meaning that Irish Distillers controlled the production of all Irish whiskey at the time.
Split into simpler sentences: After the Second World War the distillery was bought by Isaac Wolfson. Then in 1972, it was taken over by Irish Distillers, meaning that Irish Distillers controlled the production of all Irish whiskey at the time.