Answer:
The most direct cause of the development of factories in Manchester (the first industrial city in the world), was the invention of the spinning jenny by James Hargreaves, and the invention of the water frame by Richard Arkwright.
These two inventions made the production of cloth from cotton a lot of faster and easier. Shortly after, these two inventors founded factories in Manchester, and hired people from the countryside.
From this moment on, the industry boomed, and Manchester became the first industrial city in the world, effectively starting the Industrial Revolution.
The start of Civil Wars and Mali's decline was due to struggles over the line of succession, essentially the <span>ordered sequence the people eligible to succeed to the throne if the leader were to be dethroned, die, etc.</span>
The answer should be B! It's actually kinda funny. Northerners thought that the Confederate army would be easily defeated and that the Civil War was going to begin and end at the Battle of Bull Run. So, lots of spectators watched, but they were quickly proven wrong, as the war lasted for years.