According to Wikipedia:
Zionism is a nationalist movement that emerged in the 19th century to enable the establishment of a homeland for the Jewish people in Palestine, a region roughly corresponding to the Land of Israel in Jewish tradition. Following the establishment of the modern state of Israel, Zionism became an ideology that supports the development and protection of the State of Israel as a Jewish state.
According to this article, when Zionism started in the 19th century, Jews were only a small minority of the population:
In the 1880s, when the first colonies were formed, Jews made up only 3 or 4 percent of the inhabitants of what would become Palestine. Most of them were Biblical scholars funded from abroad. The rest of the inhabitants were Arab Muslims and Christians. [..] In 1947, on the eve of the United Nations decision to partition the country, Jews still made up only 32 percent of the population. In the partition, which the Arabs rejected, Jews got 55 percent of the land, including the most economically viable areas, and the Arabs only 40 percent
Before and during the creation of Israel, the founders of Israel acknowledged that ethnic cleansing was necessary for the purpose of establishing a Jewish state (from Wikipedia):
Israeli historian Benny Morris, widely regarded as an authority on the Arab-Israeli conflict and the leading authority on origins of the Palestinian refugee problem [..] goes on to describe Zionism as "a colonizing and expansionist ideology and movement" whose "ideology and practice were necessarily and elementally expansionist." Morris describes the Zionist goal of establishing a Jewish state in Palestine as necessarily displacing and dispossessing the Arab population. The practical issue of establishing a Jewish state in a majority non-Jewish and Arab region was a fundamental issue for the Zionist movement. Revisionist Zionist Ze'ev Jabotinsky described the notion of "transfer" (the Zionist euphemism for ethnic cleansing of the Arab Palestinian population) as a "brutal expulsion" which could resolve this challenge. The idea of transfer was not unique to Revisionist Zionism, in fact, as explained by Morris, "the idea of transferring the Arabs out... was seen as the chief means of assuring the stability of the 'Jewishness' of the proposed Jewish State".
In Israel, the US and Europe, to what extent is it officially acknowledged that ethnic cleansing has been carried out for the development of Israel as a majority Jewish state?
For example, in these countries, are there UN speeches by government officials which mention it? Do standard history textbooks in Israel (or other Western countries) mention this? Would it be explicitly mentioned in regular documentaries about the history of Israel or about the Israel-Palestine conflict?