Write an interpretive analysis of john singer sargent’s gassed 1919

Which does the author mean by " nature had to kindle all the fires, for man by his own effort was unable to produce a spark

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.

For platowhich kinds of materials were used to make dwellings in the neolithic period? a) bones, tusks, and branchesb) small stones and pebblesc) large stones and wood ((answer))