See? i am not sure if it’s right, sorry if it is not!!!
Implementation of firewall
installation of anti-virus software
Explanation:
12: life line for commoners
13.started riot, especially
14.unfaur taxation, voting issues, unequal lang, estates gets all the votes, 1st and 2nd estates more votes than 3rd estates.
15. most of the population who were the 3rd estates (97%) treated people poorly with high taxes and decided to revolt
Im pretty sure your answer is the last one
Because singular elements don't have numbers in them those are chemicals or mixes
So Zn and ZnCl