The extension of slavery into the western territories.
For a specific instance, see the landmark supreme court case Dred Scott v. Sandford.
For the government territory of the united states
A reed stylus was the main writing tool used by Mesopotamian scribes. Scribes created the wedge shapes which made cuneiform signs by pressing the stylus into a clay or wax surface.
smelting a piece of iron on which heated metal is beaten in shaps