This is the 3623rd most frequent Korean word.
보여줬다
"Showed" or "demonstrated."
Here, "보여줬다" is used to describe the action of showing something (a painting) to someone (me) intentionally.
그는 나에게 그림을 보여줬다.
He showed me a painting.
In this context, "보여줬다" expresses the act of presenting or introducing an idea to a group.
새로운 아이디어를 팀에게 보여줬다.
I showed the team a new idea.
Here, "보여줬다" conveys the act of displaying their toys to their friends as a form of sharing or showing off.