What was common between establishment of Forest Service and the Act of 1865?

Correct answer: Both strengthened colonial forest control

The direct answer is option D: both strengthened colonial forest control. The Forest Service was an administrative institution staffed and organized to manage forests according to colonial priorities. The Indian Forest Act of 1865 gave the government legal power to claim or regulate forests and their resources. The reasoning is: an institution supplies officials and administration; a law supplies legal authority; together they allowed the colonial state to classify forests, control timber, and restrict local use. Option D is correct because it identifies their common purpose. Option A is wrong because these measures did not make local freedom complete; they generally reduced customary freedom. Option B is wrong because their main subject was land and forest administration, not sea trade. Option C is wrong because increasing cotton production was not the common purpose of the Forest Service and the 1865 forest law. The exact dates and later changes may be studied separately, but the common historical trend is stronger state control. Memory cue: service gives officials, Act gives legal power, and both control forests.