I know that the answer to the question "The U.S. Secretary of Defense was helped by?" is in "Within months of beginning his tenure as the president of the university, Eisenhower was requested to advise U.S. Secretary of Defense James Forrestal on the unification of the armed services. About six months after his appointment, he became the informal Chairman of the Joint Chiefs of Staff in Washington. Two months later he fell ill, and he spent over a month in recovery at the Augusta National Golf Club. He returned to his post in New York in mid-May, and in July 1949 took a two-month vacation out-of-state. Because the American Assembly had begun to take shape, he traveled around the country during mid-to-late 1950, building financial support from Columbia Associates, an alumni association.". Can you tell me what it is?
Ans: Eisenhower

I know that the answer to the question "How many characters were in the digimon group?" is in "The first Digimon television series, which began airing on March 7, 1999 in Japan on Fuji TV and Kids Station and on August 14, 1999 in the United States on Fox Kids dubbed by Saban Entertainment for the North American English version. Its premise is a group of 7 kids who, while at summer camp, travel to the Digital World, inhabited by creatures known as Digital Monsters, or Digimon, learning they are chosen to be "DigiDestined" ("Chosen Children" in the Japanese version) to save both the Digital and Real World from evil. Each Kid was given a Digivice which selected them to be transported to the DigiWorld and was destined to be paired up with a Digimon Partner, such as Tai being paired up with Agumon and Matt with Gabumon. The children are helped by a mysterious man/digimon named Gennai, who helps them via hologram. The Digivices help their Digimon allies to Digivolve into stronger creatures in times of peril. The Digimon usually reached higher forms when their human partners are placed in dangerous situations, such as fighting the evil forces of Devimon, Etemon and Myotismon in their Champion forms. Later, each character discovered a crest that each belonged to a person; Tai the Crest of Courage, Matt the Crest of Friendship, Sora the Crest of Love, Izzy the Crest of Knowledge, Mimi the Crest of Sincerity, Joe the Crest of Reliability, T.K. the Crest of Hope, and later Kari the Crest of Light which allowed their Digimon to digivolve into their Ultimate forms. The group consisted of seven original characters: Taichi "Tai" Kamiya, Yamato "Matt" Ishida, Sora Takenouchi, Koushiro "Izzy" Izumi, Mimi Tachikawa, Joe Kido, and Takeru "T.K." Takaishi. Later on in the series, an eighth character was introduced: Hikari "Kari" Kamiya (who is Taichi's younger sister).". Can you tell me what it is?
Ans: The group consisted of seven original characters: Taichi "Tai" Kamiya, Yamato "Matt" Ishida, Sora Takenouchi, Koushiro "Izzy" Izumi, Mimi Tachikawa, Joe Kido, and Takeru "T.K." Takaishi. Later on in the series, an eighth character was introduced: Hikari "Kari" Kamiya (who is Taichi's younger sister)

I know that the answer to the question "What happened during Pax Britannica?" is in "When Russia invaded the Turkish Balkans in 1853, fears of Russian dominance in the Mediterranean and Middle East led Britain and France to invade the Crimean Peninsula to destroy Russian naval capabilities. The ensuing Crimean War (1854–56), which involved new techniques of modern warfare, and was the only global war fought between Britain and another imperial power during the Pax Britannica, was a resounding defeat for Russia. The situation remained unresolved in Central Asia for two more decades, with Britain annexing Baluchistan in 1876 and Russia annexing Kirghizia, Kazakhstan, and Turkmenistan. For a while it appeared that another war would be inevitable, but the two countries reached an agreement on their respective spheres of influence in the region in 1878 and on all outstanding matters in 1907 with the signing of the Anglo-Russian Entente. The destruction of the Russian Navy by the Japanese at the Battle of Port Arthur during the Russo-Japanese War of 1904–05 also limited its threat to the British.". Can you tell me what it is?
Ans: Crimean War

I know that the answer to the question "what is the second time period mentioned?" is in "In 1931, RCA Victor introduced their vinyl-based Victrolac compound as a material for some unusual-format and special-purpose records. By the end of the 1930s vinyl's advantages of light weight, relative unbreakability and low surface noise had made it the material of choice for prerecorded radio programming and other critical applications. When it came to ordinary 78 rpm records, however, the much higher cost of the raw material, as well as its vulnerability to the heavy pickups and crudely mass-produced steel needles still commonly used in home record players, made its general substitution for shellac impractical at that time. During the Second World War, the United States Armed Forces produced thousands of 12-inch vinyl 78 rpm V-Discs for use by the troops overseas. After the war, the wider use of vinyl became more practical as new record players with relatively lightweight crystal pickups and precision-ground styli made of sapphire or an exotic osmium alloy proliferated. In late 1945, RCA Victor began offering special transparent red vinyl De Luxe pressings of some classical 78s, at a de luxe price. Later, Decca Records introduced vinyl Deccalite 78s, while other record companies came up with vinyl concoctions such as Metrolite, Merco Plastic and Sav-o-flex, but these were mainly used to produce "unbreakable" children's records and special thin vinyl DJ pressings for shipment to radio stations.". Can you tell me what it is?

Ans: end of the 1930s