rebuilding 9/11

1.I learned that it is harder than most people thought to get all these thing created for the buildings. Like the concrete, the construction workers had to get the right amount of water in it and different stuff. f the measurement was a little bit off they have to start over. Also with the glass they take lots of tie making it and sometimes it breaks because they did something wrong after creating the glass for a very long time.

2.The challenges were that until they got it right they had to go through many wrongs and mistakes.

3.The world trade center buildings are to represent the twin towers obviously. And also to have people come together as one and recognize the beauty of the buildings.