What change in tariff rates supports the argument that between 1820 and 1880 the British moved toward a policy advocated by?

The argument that between 1820 and 1880 the British moved towards a policy advocated by supporters of free trade is supported by significant changes in tariff rates during this period. The liberalization of trade began with the repeal of the Corn Laws in 1846, which represented a pivotal move away from protectionist policies that had previously favored domestic agricultural interests. This repeal exemplified a shift towards free trade principles, as it lowered the tariffs on imported grain, allowing cheaper food to enter the market and benefiting the industrial workforce and consumers alike.

Throughout this period, numerous other tariff reductions occurred, signaling the British government's increasing commitment to free trade ideology. This movement towards reduced tariffs correlates with the broader economic philosophy that advocated for minimal government intervention in markets, allowing supply and demand to dictate prices and trade flows.

The other options represent either outdated or different economic theories that did not align with the changing policies of the British government during this period. Physiocrats focused on agricultural production and land's role in economic activity, mercantilists emphasized state intervention and accumulation of wealth through protectionist measures, and socialism sought collective ownership and control, which contrasts sharply with the free trade direction that Britain was heading towards. This context solidifies why the shift in tariff rates between 182