Thomas Edison’s invention that revolutionized lighting.

A very tall building made possible by steel frames.

A manufacturing process where products move past workers.

A tiny electronic circuit that powers modern technology.

An economic system encouraging private business.

The capital of the United States.

The federal territory where Washington is located.

A territory under direct control of the federal government.

Section of Constitution giving Congress power over the capital.

Famous statue symbolizing freedom in New York Harbor.