The particle は is used to identify the topic of the sentence, emphasize the object being mentioned, and is followed by information that describes or explains that topic.手毬は、日本の おもちゃです。
Noun + は + noun/clause + という + nounN4
This pattern is used to explain the meaning, content of a noun or phrase, usually translated as so-called/ means....手毬の 模様は、「人と 仲良く する」という 意味が あります。
Therefore, ～N4
“だから” is used at the beginning of a sentence to state a conclusion, reason, or result based on previously mentioned information.だから、手毬の 模様は お祝いの 時に 使います。
