Quick Sausage Gumbo with Blackened Shrimp

Name: Quick Sausage Gumbo with Blackened Shrimp
Ingredients: 1 pound bulk Italian sausage, hot or sweet; 1/2 onion, chopped; 1/2 pound okra, chopped; 3 cloves garlic, minced; 1-2 teaspoons creole or cajun seasoning; 15 ounces canned stewed tomatoes; 1 cup chicken stock; 1/2 pound shrimp, peeled and deveined; 1 teaspoon sugar; 1 teaspoon chili powder; 1/2 teaspoon onion powder; 1/2 teaspoon garlic powder; 1/2 teaspoon seasoned salt; 1/4 teaspoon cayenne pepper; cooked white rice, optional, for serving