Steel production decreased after ww2
Parliamentary democracy: people vote to decide who is going to represent them in the legislative branch
This is specific to your religion of preference. I can not answer this for you, however, I can explain it a little bit. They are asking you to compare your religion's (faith's) holy book to that of another religion's book, for example if you are a Christian your holy book is considered the "Holy Bible" and you would compare the principals and similarities of that book to the book of Torah (Judaism), or Tripitaka (Buddhism), or Quran (Islam) Its really up to you, all you need to do is compare your holy book to others (if you don't have one just use one that you know best and compare it to others)
There are a lot of religions out there you would be surprised, look some up online it will help.
The correct answer here is the option C.
In order to keep the fragile balance of power in the period before the World War I, countries entered alliances with one another. So for example, France, Russia and the Great Britain were in one alliance and the Germans and Austrians in another. If one country entered a war the other were obliged to go to their aid. That is how the World War I escalated.