What convenience food did Momofuku Ando invent in Japan in 1958?

Writers know which word, also a verb, as a quantity of 500 sheets of paper? Robert Schumann wrote a famous piano piece in C major in 1836 whose name is also a word for a daydream; what is it? Which two-pointed cocked hat, famously worn by Napoleon, was popular around 1800? What nut, also called a filbert, is Oregon's state nut? Which holiday, also called Shrove Tuesday, came to Louisiana in 1699 with French explorers? Somatotropin is another name for which substance known by the initials HGH? Which forest-dwelling relative of the giraffe was first described by Europeans around 1900 in the Congo? What is the Chinese name of the Yellow River, which flows over 3,000 miles to the Bohai Sea?