If free trade benefit all nations in the long run why do nations so often establish barriers, like tariffs, to make free trade impossible

Religion or was a major factor contributing to the age of exploration? gold god glory grants

What role and side did italy fight on during world war 1? why did they change sides? write this in your own words.

Germany italy and japan formed the tripartite pact in part because they: a. add chicken wings to the united states to stay out of world war ii b. share the ruling philosophies based on communist economics c. resented the agreements they were forced to sign at the munich conference d. selena territories were threatened by aggressive foreign states