Definitely not true, only some pharoahs got them built.
Optimism is a cognitive process of looking at situations with favorable expectations of the future.
Answer:
Combustion engine
Explanation:
The combustion engine were some of the most significant and very far technologies of the Industrial Revolution. This was first presented in 1878 and was propelled by gas and air, making it unsuitable for large public use. During the Industrial Era, the combustion engine was perhaps the most efficient, both in the early years and even in the long run.
I believe that is b correct me if I'm wrong
