He invented "Glass Harmonica"....
Answer:
Keep on going
Explanation:
Being that is hard but I know one day you will succeed. DON'T stop believing in yourself
Eli Whitney is credited with putting the concept of using mass-produced interchangeable parts into practice. He came up with this concept during a war, when he used these parts to create guns.
Answer:
Osama bin Laden and al-Qaeda planned and carried out the attacks on the United States.
