Answer:
Option C The government wanted to secure the land after prospectors discovered gold.
Step-by-step explanation:
The Northwest Ordinance was a treaty by which the new territories could be admitted to the United States. It came into play after the need to abolish slavery in all its forms. In addition, it was done by the government to encourage westward expansion. This westward expansion was important especially after the discovery of gold in the land. Thus, the economic prospects could be uncovered from the treaty.