<span>A specific time during development when a particular event has its greatest consequences and the presence of certain kinds of environmental stimuli is necessary for development to proceed normally is called disi</span>
This phenomenon can best be explained by <u>"the gate-control theory".</u>
According to the gate control theory, pain signals are not allowed to achieve the brain when they are produced at the harmed tissues or destinations. They have to experience certain 'neurological gates' at the spinal cord level and these doors decide if the torment signs should achieve the brain or not. As such, pain is seen when the entryway offers path to the torment signs and it is less exceptional or not in the least saw when the door closes for the signs to go through. This theory gives the clarification for why somebody discovers help by rubbing or kneading a harmed or a difficult region.
Answer:
D: It is where the last spike was driven to compete the transcontinental railroad.
Answer:
c
Explanation:
It made the United States twice as big as it had been.
The speaker of the house, the senate majority leader
