The US government wanted to win the Space Race, and since they saw the USSR had already put an object into space they needed to catch up or beat them.
Answer:
Child labour can be changed by following points. They are:
1)Spread awareness
2)Sending more children to school
3)Supporting NGO'S like save the children
It was constructed using objects that he could find around him. For example, he had only a single wheel mounted on a bicycle fork and it all stood on a simple white chair. He said the idea behind it was that he always wanted to mount it on a chair and just watch it turn around and around infinitely.