The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. ... The alliances system meant that a local conflict could easily result into an intimidating global one. The overall cause of World War was the assassination of Archduke Franz Ferdinand.
 
        
             
        
        
        
We (as in 2016) cannot use the land bridge because of the melting of the glaciers. Back then the glaciers were still in one piece and the sea levels were much lower than now. This allowed the early people to cross the bearing straight.
        
             
        
        
        
I am not entirely sure about this one. But I believe that the "Emancipation Manifesto" signed by Czar Alexander II gave serfs land, or at least gave them the freedom to do what they wanted, like buying that said land.
No freedom of religion, or elections was yet to be had in Russia.
        
             
        
        
        
Answer:
demonstrating complaints
Explanation:
 demonstrating complaints, if peoples demonstrade how poor their life are, about economical changes expensively than they will some problem resulting many peoples dead......