Louisiana Shrimp Gumbo

Name: Louisiana Shrimp Gumbo
Ingredients: 1 cup vegetable oil; 1 cup all-purpose flour; 1 onion, peeled and chopped; 1 green pepper, seeds removed and chopped; 1 stalk celery, chopped; 4 garlic cloves, peeled; 2 cups chicken broth; 6 ounces andouille sausages, chorizo or 6 ounces Italian sausage, sliced; 8 ounces shrimp, peeled and devined; 1 (28 ounce) can whole tomatoes; 4 ounces okra (fresh or frozen); 1 teaspoon paprika; 1 teaspoon onion powder; 1 teaspoon garlic powder; 1 teaspoon dried oregano; 1 teaspoon dried thyme; 1 teaspoon gumbo file powder (sassafras); 1⁄4 teaspoon cayenne pepper; sea salt; 2 green onions, thinly sliced