He greatly improved existing stream engines for use in factories
Answer: A. Slavery was the main cause of the civil war
Beacuse when his enemies heard Napoleon had returned, they had declared him an outlaw and sent troops to defeat him, and defeated him at the battle of Waterloo.
i hope it helps!
It is intended to protect flourishing manufacturing. Britain already had a very efficient manufacturing machine, and could produce finished goods much more cheaply than factories in America that had just began to start. The tariff made products from foreign manufacturers more expensive than American goods, which made the American good purchased more.
It was Barack Obama. hope it helps