Because you are still listing events that happened.
Answer:
The plantation system developed in the American South as the British colonists arrived in Virginia and divided the land into large areas suitable for farming. Because the economy of the South depended on the cultivation of crops, the need for agricultural labor led to the establishment of slavery.
Answer:
Factory system, system of manufacturing that began in the 18th century and is based on the concentration of industry into specialized—and often large—establishments. The system arose in the course of the Industrial Revolution
Explanation:
If you are talking about a bill, it is debated with the House of Representatives, and then sent to the President for signature.