Intellectuals such as Robert Darnton and Jürgen Habermas have focused on the social conditions of the Enlightenment. Habermas described the creation of the "bourgeois public sphere" in 18th-century Europe, containing the new venues and modes of communication allowing for rational exchange. Habermas said that the public sphere was bourgeois, egalitarian, rational, and independent from the state, making it the ideal venue for intellectuals to critically examine contemporary politics and society, away from the interference of established authority. While the public sphere is generally an integral component of the social study of the Enlightenment, other historians have questioned whether the public sphere had these characteristics.
The new venues and modes of communication allowing for rational exchange were given what term by Habermas in 18th century Europe?
the "bourgeois public sphere"

The Third (1919–23) and Fourth Aliyahs (1924–29) brought an additional 100,000 Jews to Palestine. Finally, the rise of Nazism and the increasing persecution of Jews in 1930s Europe led to the Fifth Aliyah, with an influx of a quarter of a million Jews. This was a major cause of the Arab revolt of 1936–39 during which the British Mandate authorities alongside the Zionist militias of Haganah and Irgun killed 5,032 Arabs and wounded 14,760, resulting in over ten percent of the adult male Palestinian Arab population killed, wounded, imprisoned or exiled. The British introduced restrictions on Jewish immigration to Palestine with the White Paper of 1939. With countries around the world turning away Jewish refugees fleeing the Holocaust, a clandestine movement known as Aliyah Bet was organized to bring Jews to Palestine. By the end of World War II, the Jewish population of Palestine had increased to 33% of the total population. On July 22, 1946, Irgun attacked the British administrative headquarters for Palestine, which was housed in the southern wing of the King David Hotel in Jerusalem. 91 people of various nationalities were killed and 46 were injured. The hotel was the site of the central offices of the British Mandatory authorities of Palestine, principally the Secretariat of the Government of Palestine and the Headquarters of the British Armed Forces in Palestine and Transjordan. The attack initially had the approval of the Haganah (the principal Jewish paramilitary group in Palestine). It was conceived as a response to Operation Agatha (a series of widespread raids, including one on the Jewish Agency, conducted by the British authorities) and was the deadliest directed at the British during the Mandate era (1920–1948).
When did Irgun attack the British administrative headquarters?
July 22, 1946

A dramatic example of the effect of food processing on a population's health is the history of epidemics of beri-beri in people subsisting on polished rice. Removing the outer layer of rice by polishing it removes with it the essential vitamin thiamine, causing beri-beri. Another example is the development of scurvy among infants in the late 19th century in the United States. It turned out that the vast majority of sufferers were being fed milk that had been heat-treated (as suggested by Pasteur) to control bacterial disease. Pasteurisation was effective against bacteria, but it destroyed the vitamin C.
Which disease became prevalent among infants in the United States as an effect of processed foods?
scurvy