Answer:
1) Likeness: Likeness of members in a social group is the primary basis of their mutuality.
2) Interdependence: It is not possible for human being to satisfy his desire in isolation.
3) Cooperation: If the members of the society do not work together for the common purposes, they cannot lead a happy and comfortable life.
Answer:
Trench Weapons.
Grenades.
Underground Mining.
Artillery and Mortars.
Machine-Guns.
Poison Gas.
Rifles.
Tanks and Armoured Vehicles.
The answer to this question is Salvation
Pavlov conduct this research to make sure that the salivation process being done by the dogs is not a result of normal biological process and deepen his understanding on why and how the salivation works.
After making sure that there is no correlation, then he started to teach the associations in order to know whether external stimuli could influence it.