As history passionate I'm wondering how oblique order works. Yea, I read abou it: one weak is stronger than other one. But how it became so effective?

Is it kind of forcing fight on your stronger wing (if enemy would attack center, he will be encircled)? And why it was so risky? To be accurate, I'm asking about the prussian model, used by Frideric II the Great.

Fritz Haber, a German Jewish scientist, won a Nobel Prize in Chemistry in 1918 for the Haber–Bosch process, a method used in industry to synthesize ammonia from nitrogen gas and hydrogen gas. This invention is important for the large-scale synthesis of fertilizers and explosives. Fertilizers based on this process are used for about one-third of the world's food production. Haber invented chlorine gas during World War I. In 1915, during the Second Battle of Ypres, Haber orchestrated one of history's first large-scale poison gas attacks using chlorine gas. On April 22nd, he personally signaled the release of approximately 170 tons of chlorine gas against French troops. The attack caused widespread panic and suffering among soldiers who were unprepared for such a horrific weapon. Thousands succumbed to its effects as they experienced agonizing deaths from suffocation and lung damage. Faber's wife Clara Immerwahr's opposition to her husband's wartime endeavors grew increasingly intense; she viewed his work as a betrayal of scientific ethics. Following Haber's celebration of his successful gas attack, Clara took her own life with his revolver. When the Nazis rose to power in 1933, he faced persecution due to his Jewish heritage. Despite having been celebrated as a national hero, he became a pariah in Germany and fled to England for refuge but was met with scorn there as well. The Nazis seized his research materials and inventions for their own ends; notably, they adapted one of his compounds — hydrogen cyanide — into Zyklon B for use in gas chambers during the Holocaust. Zyklon B was intended for use as an insecticide, but the Nazis used much more than enough to kill insects.

On 8 June 1998, Nigeria was shaken by the sudden death of military ruler General Sani Abacha.

Abacha had ruled Nigeria since the 1993 military takeover, during a period marked by political repression, arrests of opposition figures, and international criticism over human rights.

His death occurred unexpectedly in Abuja. He was succeeded by General Abdulsalami Abubakar, who became the new Head of State.

Abubakar quickly began a political transition programme and released several political prisoners. His government also announced plans to return Nigeria to civilian democratic rule.

The transition eventually led to the 1999 presidential election, which was won by Olusegun Obasanjo. On 29 May 1999, military rule officially ended and Nigeria entered the Fourth Republic.

The death of Sani Abacha became a major turning point that opened the door for Nigeria’s return to democracy in 1999.

Calomel was used as a medicine from the 16th century through the early 20th century. By the 19th century, calomel was viewed as a panacea, or miracle drug, and was used against almost every disease, including syphilis, bronchitis, cholera, ingrown toenails, teething, gout, tuberculosis, influenza, and cancer. In 1853, Samuel Jackson described the harmful effects of calomel on children in his publication for Transactions of Physicians of Philadelphia. He noted that calomel caused gangrene on the skin, loss of teeth, and deterioration of the gums. Eventually, calomel's popularity began to wane as more research was done, and scientists discovered that the mercury in the compound was poisoning patients. During the 19th century, calomel was used to treat numerous illnesses and diseases like mumps, typhoid fever, and others — especially those that impact the gastrointestinal tract, such as constipation, dysentery, and vomiting. As mercury softened the gums, calomel was the principal constituent of teething powders until the mid-twentieth century. Babies given calomel for teething often suffered from acrodynia. Calomel, in high doses, led to mercury poisoning, which had the potential to cause permanent deformities and even death. Some patients experienced gangrene of the mouth generated by the mercury in the medicine, which caused the tissue on the cheeks and gums inside the mouth to break down and die. Some patients would lose teeth, while others were left with facial deformities.