Answer:
It was unique, and it indicated how much respect and popularity he had gained.
Step-by-step explanation:
The fact that George Washington was elected unanimously so important is that it shows that at the time, his situation was very unique.
Also, it indicated how much respect and popularity he had gained. This was as a result of his role in the just concluded American Revolutionary war at that period.
And at the same time, his examplary role during the Constitutional Convention.