Which statement is an accurate description of the american federal system

Which four of these developments were made under mongol rule during the pax mongolica? the extension of the grand canal in china the spread of christianity the spread of weapons that used gun powder the invention of new medicines the establishment of a postal system the invention of geometric models of lunar motion

Using the pictures and text for reference describe what had to be done to create the central park today

What is the main purpose of "falling action" in a story?