The service of the Cabinet members to the government is that each cabinet member has elected in order to serve the President. They are put into the position in which they should protect the president and go with all his/her projects. They also need to gain the trust of the President in order for them to be elected.
The British would cede all lands east of the Mississippi River and North to Canada to the United States except for Florida, which would be given back to Spain.
The Civil War began when the Confederates bombarded Union Soldiers at Fort Summer. And, yes, it did start from the different views from the South and North that came with President Lincoln.
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The Daniel Shays rebellion was due to the poor social and economic problems and the Articles of Confederation was not able to properly rule the newly structured country.