What was common between the Kalang rebellion and the Samin movement?

Correct answer: Both showed local resistance against forest control

The direct answer is option C. The Kalang rebellion and the Samin movement occurred in different contexts and periods, but both represent local resistance to outside or state control over forests and forest resources. Forest regulations could restrict customary access, impose authority and interfere with village life and livelihoods. Option A is wrong because sea trade was not the shared central issue. Option B is wrong because textile production was not the common reason for these movements. Option C is correct because local people resisted the control that threatened their customary relationship with forests. Option D is wrong because railway expansion was a colonial demand or project, not the common demand of these movements. The key distinction is between a shared theme and identical events: they were not the same movement, but both show resistance to forest control.