Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.
(1860-1948).At the age of 56, John J. Pershing became the commander of the American Expeditionary Force that helped to turn the tide in favor of the Allies and against the Central Powers during World War I. For his leadership during the war, he was promoted to the rank of general of the armies.
General John J. Pershing (1860-1948) was probably the best known American general of World War I. Born to a farming family in Missouri, Pershing worked as a teacher before accepting a position at the prestigious West Point military academy.ustafa Kemal Ataturk (1881-1938) was a prominent Ottoman military commander of World War I. Born in Salonica, Mustafa Kemal was the son of a civil servant, who encouraged him to enter one of the empireâs military academies. He graduated in 1905, received an officerâs commission and was given his first posting.