Class struggle and political revolution is necessary for socialism to emerge. They think that everyone will just adopt it, without struggle or a fight, if it's represented convincingly.
Pretty much everyone except northeast . Because southeast there is Florida which is hot in summer and not that cold. Southwest it gets so hot and not really cold. Mid west does get very warm as well too
Chemical welds are the most adaptive type of welding available in geomembranes. Many complex arrangements can be performed with Chemical Welds. Certain liner materials can be welded through the use of chemical fusion. This is not a glue, but an actual weld prepared with chemicals. Mechanical welding uses machines and is more modern.