How many half steps are there between C Sharp C natural

Order the events as they occurred in history. thomas edison and william dickson invent the kinetoscope. the view from the window at le gras is created. disney produces flowers and trees, the first color film. stanley kubrick revolutionizes special effects with 2001: a space odyssey. muybridge creates the horse in motion. francis ford coppola’s apocalypse now is selected for preservation by the library of congress. d. w. griffith directs the birth of a nation. marilyn monroe makes her film debut.

Visual rhythm indicates movement and suggests unity of form by the repetition of elements.

In russian churches the number of domes usually matches the number of altars. but this church has only one altar dome, and 21 symbolic ones. what normal construction device does this church lack?