Add garlic, onion, and celery and sauté about 5 minutes.
Add all remaining ingredients except spaghetti, and stir until ingredients are well mixed.
Bring to a boil. Reduce heat, cover, and simmer about 45 minutes or until vegetables are tender.
Add uncooked spaghetti and simmer 2-3 minutes only. Serve warm.
Add uncooked spaghetti and simmer 2-3 minutes only. Serve warm.