evidence: The land which would become Israel was for centuries part of the Turkish-ruled Ottoman Empire. After World War One and the collapse of the empire, territory known as Palestine - the portion of which west of the River Jordan was also known as the land of Israel by Jews - was marked out and assigned to Britain to administer by the victorious allied powers (soon after endorsed by the League of Nations). [...] The biggest change to Israel's frontiers came in 1967, when the conflict known as the Six Day War left Israel in occupation of the Sinai peninsula, the Gaza Strip, the West Bank, East Jerusalem and most of the Syrian Golan Heights - effectively tripling the size of territory under Israel's control. Israel effectively annexed East Jerusalem - claiming the whole of the city as its capital - and the Golan Heights. [...] Similarly, Israel has had a de facto border with Gaza since it pulled its troops and settlers out in 2005, but Gaza and the West Bank are considered a single occupied entity by the UN, and the official borders have not yet been determined.