The best option from the list would be "<span>The guillotine was an effective instrument for instilling fear and conflict," since this is an opinion that needs to be supported with historical evidence. The other options are simply facts (or non-facts). </span>
Farm life as more behind in technology while cities were more fast-paced, had more jobs and used more technology.
I would say B.
as Imperialism during the industrialization era allowed for nations to colonize under developed nations in Africa and Asia. Which gave them access to their natural resources and markets
For example the British Empire had a vast amount of land with a array of resources but they held economical markets in Asia (China, India and Malaysia)
...Charged very high prices to move farm products to market
The farmers felt the railroads had monopoly power over them. The farmers essentially had no choice but to send their crops to market on trains. There was not much, if any, competition on most short-line tracks that went through farm areas. Therefore, most farmers had to simply accept whatever price railroads charged to transport crops. Farmers felt the railroads could gouge them by charging high prices and that they, the farmers, had no recourse when this happened. They blamed much of their trouble on this monopoly power.