Learn Swedish: Tror du att skapandet av torget påverkar infrastrukturen? - Do you think that the creating of the square affects the infrastructure?

It comes from the verb skapa (to create). By adding the suffix -ande, it turns into a noun meaning the act of creating. Nouns formed this way are always ett-words. Because we are talking about the specific creation of the square, it takes the definite suffix -t, becoming skapandet.

Why do we use av in skapandet av torget?

This is the objective genitive in action. When an -ande or -ende noun describes a process, the thing being acted upon (the object) is linked using the preposition av (of). It functions just like English: the creating of the square. While you could technically combine them into a compound word like torgskapandet, using av flows much better for specific physical locations.

Could I use the word skapelsen instead of skapandet to mean the creation?

Not quite. While both translate to creation, skapandet focuses on the active, ongoing process of building or making something. Skapelsen refers to the finished result, the creation itself, or is used in religious contexts. Since the sentence is about the impact of the construction process, skapandet is the correct choice.

In the subordinate clause starting with att, why does the verb påverkar come immediately after ?