Historical importance is how someone/something effected history or how it is important to history.
what is the historical importance of harappa
because he is a loser
popo
there is a lottt of imp..
nothing
9.11
it is cool
It is of great historical importance and helps us in understanding India of that time.
Forbidden City ----
He sailed to america first
Nothing of any great historical importance happened at Mt. Rushmore, unless you consider the carving itself to historical.
I think that the importance of historical excursions is to appreciate and remember how one place, person or things changed the course of the world. How it has evolved and to ultimately know that if it were not from these history, we wouldn't be here today.