For 10 points, name this American sculptor known for inventing the mobile sculpture.
At the suggestion of a Serbian merchant, this artist began his career making toys. His works include the giant Flamingo in Chicago. As his popularity grew, he started to construct both wire sculpture and kinetic art as seen in Form Against Yellow and Lobster Trap and Fish Tail. For 10 points, name this American sculptor known for inventing the mobile sculpture.
At the suggestion of a Serbian merchant, this artist began his career making toys.
Alexander {Calder}