Answer:
It tells a people's history.
It expresses a legacy.
Step-by-step explanation:
The Freedom Tower is the most important building in the United States, both for its height (it is the tallest in the nation and the continent) and for its commercial importance and its historical significance (it is part of the One World Trade Center complex, which replaced to the Twin Towers after the 2001 attack).
Thus, this building expresses a legacy as it symbolizes America's recovery from the terrorist threat, as well as perseverance and strength in the face of adversity that America has as a nation. On the other hand, it tells a story, as it is located in the same place where the Twin Towers were, marking an indelible memory of what happened in that place.