Why did Shakespeare have to stop acting and work on sonnets instead.

The turning point in Shakespeare's career came in 1593. The theatres had been closed since 1592 due to an outbreak of the plague and, although it is possible that Shakespeare toured the outlying areas of London with acting companies like Pembroke's Men or Lord Strange's Men, it seems more likely that he left the theatre entirely during this time to work on his non-dramatic poetry. The hard work paid off, for by the end of 1593, Shakespeare had caught the attention of the Earl of Southampton.Southampton became Shakespeare's patron, and on April 18, 1593, Venus and Adonis was entered for publication. Shakespeare had made his formal debut as a poet. The dedication Shakespeare wrote to Southampton at the beginning of the poem is impassioned and telling, "phrased with courtly deference" (Rowse 74):

"the royal proclamation of 1763"

these civilizations were located around fertile rivers, where they could produce an abundance of crops