It's a very long sentence with a lot of information, but it is still only a simple sentence (option b): it has only one verb (taught). In order to qualify as a complex or compound-complex sentence, it would have to have at least 2 phrases, each with a different verb.
1. natives don't write letters to a newspaper editor
2. the natives used horses for transportation and hunting
The answer should be:
Animal & human power were generally replaced with steam power.
Muslims whom are financially able to go!
Answer: Great Britain, France, The Soviet Union, The United States, and China
In World War II the chief Allied powers were Great Britain, France (except during the German occupation, 1940–44), the Soviet Union (after its entry in June 1941), the United States (after its entry on December 8, 1941), and China.
