Answer:
D. Most slaveowners had very few slaves.
Explanation:
The largest part of the pie chart represents the smallest number of slaves; therefore, most (the largest section of the graph) people had very few slaves.
The expansion of railroads created more ways for things such as general goods to be shipped elsewhere to buyers or companies. (Hope this helps a bit, sorry for such a short answer.)
In Poland, the movement against communism was led by Gorbachev