Heat olive oil in a Dutch oven over medium-high heat. Add onion; sauté 5 minutes. Add fennel, sugar, cumin, and garlic, and cook 1 minute. Stir in tomato, vinegar, salt, and pepper, and sauté for 10 minutes or until slightly thick. Stir in spinach, water, and chickpeas; bring to a boil. Cover, reduce heat, and simmer 30 minutes. Remove from heat; stir in parsley, mint, and dill.