depends how far back you want to go:

"Israel is the very embodiment of Jewish continuity: It is the only nation on earth that inhabits the same land, bears the same name, speaks the same language, and worships the same God that it did 3,000 years ago. You dig the soil and you find pottery from Davidic times, coins from Bar Kokhba, and 2,000-year-old scrolls written in a script remarkably like the one that today advertises ice cream at the corner candy store."

The people of Israel (also called the "Jewish People") trace their origin to Abraham, who established the belief that there is only one God, the creator of the universe (see Torah). Abraham, his son Yitshak (Isaac), and grandson Jacob (Israel), are referred to as the patriarchs of the Israelites. All three patriarchs lived in the Land of Canaan, that later came to be known as the Land of Israel. They and their wives are buried in the Ma'arat HaMachpela, the Tomb of the Patriarchs, in Hebron (Genesis Chapter 23).

[link to www.science.co.il]

so i am going to go with israel..