1. How does German industry affect Canadian industry?
Awesome cars.

2. What would happen to Canadian industry if German industry fell?
Canadia would have sucky cars.

3. When did the German industry boom start?
When they built awesome cars.

4. Would Germany be affected if Canadian industry fell?
No, they'd sell their awesome cars elsewhere.

5. Where did the German industrial boom start/ what caused it?
Hiedenberg, when Martin Luther wrote the Heidelberg Confession telling everyone how much God loves German cars. God is generally pretty good at judging what's an awesome car and what's not (cough Canadian cars).

No, in all seriousness, questions 1, 2 and 4 can be easily figured out by googling the relations and trades between Germany and Canada. You probably won't find any direct sources on this, but you can look at the exports and imports of each country and see which are mutual (if they are trading with each other) or any dependencies. The others can be easily googled by asking "When the German industry boom start, and where."