Where is the crest and the trough on a wave

The crest is where the wave is at its maximum and the trough is where the wave is at its minimum if I'm not mistaken. I hope this helps! :)

The primarily goals of the zapatistas of mexico in 1994 were land reform and redistribution. it is also included in their demands to have a greater political and cultural autonomy for the indigenous people of chiapas and the rest of mexico.