Here are the correct associations for each colonizer based on the descriptions:
New Spain
- a. sent Catholic missionaries to convert native Americans
- b. relied on native Americans for trade
New France
- a. sent Catholic missionaries to convert native Americans
- b. relied on native Americans for trade
New Netherland
- b. relied on native Americans for trade
Note: New Spain and New France both had missions and engaged with Native Americans for trade, while New Netherland primarily focused on trade relationships with Native Americans.