2.north and west
3. Gemeny
The correct answer is substance-related
Explanation: Substance-related disorders involve drugs that directly activate the brain's reward system. Activation of the reward system usually causes feelings of pleasure; The specific pleasure sensations evoked vary widely, depending on the drug. These drugs are divided into 10 different classes that have different but not completely different pharmacological mechanisms.
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<em>Siblings play a role in influencing the MICROSYSTEM in Bronfenbrenner’s ecological model.</em>
Answer: Railroad expansion affected the US economy by creating jobs, establishing a national market, establishing a cattle industry on the Plains, and allowing certain people to acquire great wealth through investing in the railroad.
Explanation: