pretend that ann hulton's letter appeared in a local newspaper. write a letter to the editor in which you comment on the treatment of the customs official.

When zhang qin went to explore west, he brought back stories of

This was an act of continental congress which initially organized the first united states territory and was to be the basis for governing how the united states would expand westward.

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.