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.
  US Army General Douglas MacArthur stated to President Truman that Red China would not enter the war. They did.   GEN MacArthur then stated to the Commander in Chief t â¦ hat he was prepared to invade Red China and use nuclear weapons if needed to ensure victory; MacAuthur was relieved of command.e also tried several ploys against Truman's wishes, as he felt his vast military experience gave him precedence over a president who was a former haberdasher. Truman met with MacArthur and explained to him the concept of commander in chief .