Dmitry, these are very particular transactions!
I can see them! I can feel them! I NEED that definite article!
These are THE effects of those transactions and other events - that you mention.
Dear me, I'm getting quite excited here!
Actually, you could say it all without the article and it would make sense, but I would get a much more general feeling in my head.
Honestly, articles are clever psychological devices. They help us imagine, and specify, a situation.