Answer: The concrete operational stage.
Explanation: The concrete operational stage is the third stage in Piaget's theory of cognitive development and is characterized by the development of logical thought.
 
        
             
        
        
        
Answer:
outside periods of REM sleep 
Explanation:
NREM sleep is dreamless sleep consisting of stages 1-3(previously stage 1 through 4) and characterized by a decrease of mental activity. a state that lacks the visible rapid eye movements and twitches(REM sleep) , and exhibiting a different EEG( electroencephalographic) pattern than REM sleep. Here the sleeper is still,breathing,brain waves and heart rate is slow, and blood pressure is low. 
 
        
                    
             
        
        
        
1. Spain's transfer of territory to France - 1682
2. Pinckney's Treaty 1795
3. Louisiana purchase - 1803
4. Pike's expedition in the Southwest - 1805
        
                    
             
        
        
        
Childless middle-aged adults become generative as mentors in the workplace, community volunteers, or in family relationships.
Childless elderly persons lack a crucial social support network created by children. This is the reason why childless people<span> are presumed to fare less well at older ages than parents.</span>