According to Bede, Ireland does not "have any snakes", since it was believed that although snakes are often taken on board ships from England, once they are exposed to the air near Ireland, they die.
I believe it is shifting cultivation
The boundaries changed, that is, increased in Israel's favor. The Arab controlled territory was reduced. It was increased after the British rule ended when the State of Israel was formed. Future conflicts could be war regarding territories and expansion.