Answer:
Air Brake
Explanation:
patented by George Westinghouse in 1868 using compressed air to brake
As a result of the French and Indian War, Britain received Florida from Spain and Canada from France, while France maintained its West Indies colonies and Spain received Louisiana from France. However, the war also caused significant debts in France and Britain that eventually spurred revolutionary changes.
The correct answer is 4. laissez-faire capitalists.
Laissez-faire capitalists represent the group of people who would most likely object to the government regulation of business in the 19th century. Laissez-faire represents the system of trade which is free from government interference, so obviously this group would be against that.