I think its B i'm not sure though
Answer:
The Civil War was an armed confrontation that took place between 1861 and 1865, between the states of the North, abolitionists and members of the Union; and the states of the South, slavers and grouped in the Confederation. During this conflict, more than 600,000 Americans died, which constituted the most lethal war that took place in the United States. Ultimately, the Union was victorious, and slavery was abolished throughout the country.
This war forever changed the concept of freedom in the country, as from this event began to be included within this concept to the entire population of the nation, and not just whites. In addition, it was a kind of continuity of the American Revolution, as it extended the natural rights of life, liberty and the pursuit of happiness to members of society who until then did not enjoy those rights.
Infer cause and effect
The advantage of an experiment is that it allows a researcher to infer cause and effect.
Experimental research is a scientific method of conducting research using two variables called- independent and dependent. Independent variables can be manipulated to apply to dependent variables and the effect is measured. This measurement usually happens over a significant period of time to establish conditions and conclusions about the relationship between these two variables.
Experimental research allows to test the idea in a controlled environment before taking it to market. It also provides the best method to test any theory.
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Autonomic nervous system reactivity in a free-ranging
mammal: effects of dominance rank and personality. The autonomic nervous system
(ANS) allows animals to adapt to their environment. Autonomic nervous system
(ANS) activity allows animals to effectively respond to internal and external
stimuli in everyday challenges via changes.
