They settled in river valleys because they wanted their crops and soil to be rich and eaiser to water their plants.
        
             
        
        
        
Answer:
In a four-way contest, the Republican Party ticket of Abraham Lincoln and Hannibal Hamlin, absent from the ballot in ten slave states, won a national popular plurality, a popular majority in the North where states already had abolished slavery, and a national electoral majority comprising only Northern electoral votes.
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Answer:
The writers of the constitution wanted a new plan of government because they felt the old plan gave too much power to the states and allowed too much democracy. They fixed these problems in the document that we now call the Constitution
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Taxation without representation 
tea act
sugar act