In Hamlet, Act I, Scene ii, the dramatic convention which Shakespeare employ most is that He introduces a major conflict
This refers to the disagreement between two or more characters in a play or novel where they are at odds with each other.
With this in mind and from the complete text, we can seee that the dramatic convention which was used by Shakespeare was the introduction of a major conflict which was the announcement of Claudius of his marriage to his brother's widow.
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