Because Dred Scott was determined about Congress and how Congress could stop slavery but eventually it became unconstitutional
It was "Trotsky" who welded the new Red Army into a disciplined fighting force, although his efforts would prove ultimately to be in vane since he was later persecuted for being a traitor to the state.
In 1600s the planter class increasingly relied on African slaves for labor majorly because slaves were offering cheap labor now that the planters didn't have to pay for this form of labor. This led to most of them foregoing traditional indentured servants who would be paid for their labor and instead opted for African slaves.
The decision to nationalize some important industries impacted Britain's economy by B. forcing the government to prop up industries.
Because the government started supporting these industries, that led to improvements in economy.