The answer is choice B.
Shay's Rebellion proved the federal government's inability to protect citizens under the Articles of Confederation. This led to a strengthening of the power of the federal government when the Constitution was written up.
A compromise that both states can come to is lowering taxes
Yes, a map's legend/key helps the reader determine what symbols or images represent on a map. For example, if there was a brown line going a cross a river on a map, a legend/key would help the reader figure out that that symbol is a bridge.
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Appeasement, the policy of making concessions to the dictatorial powers in order to avoid conflict, governed Anglo-French policy during the 1930s. It became indelibly associated with conservative prime Minister Neville Chamberlain