4000 bc
Farming is Ireland's main industry.
In 1980.
The Celts were the first community to arrive in Ireland
in most history books it will tell you sir Walter Raleigh brought spuds to Ireland (they will also tell you he introduced tobacco to England)
Slavery was introduced to speed up farming.
Many people associate Ireland with potatoes and lots of potatoes are grown there, so some people do associate it with potato farming. However, other types of farming are much more important, such as dairy and beef.
Farming and fishing
It was between 4000 and 3000 BCE.
Well, there are lots of potatoes, and it's very hilly.
Likely yes.
Yes
On the 30th of April 2007.