I believe it is 21, 25. I live in Florida, but I hope this helps.
"Aggressor" is a fairly political and loose term. I believe they were both proportionally bad in the situation. However since you are likely looking for an argument for one side, I suppose I would have to go with the USSR. They started the Berlin blockade which both violated treaties and nearly led to a large war. At the time in Russia, if anyone disagreed with their secular agenda or government they would be exiled. I think it's important though to again point out that contrary to popular belief, both sides got into unwanted wars and did aggressive things during the time and neither should be dubbed the only "aggressor"
Answer:
Chunking.
Explanation:
Chunking is the process of dividing the information in groups to be easily remembered. Due to their similar traits or familiarity, the groups of words are easily remembered being separated with those that share the familiarity rather than when they are all mixed up. Such is the case with Helen and the items both from the kitchen and the garage. If she makes two separate groups out of the big list, dividing everything in groups of things that share similar traits or common aspects, she will have it easier at remembering everything.