Final answer:
There is no specific record of actions taken by a King Henry on 18th September 1493. Henry VII was the relevant monarch of England during this period, known for consolidating power and initiating overseas exploration, but the date provided does not align with known historical events of his reign.
Step-by-step explanation:
The question "What did Henry do on 18th September 1493?" seems to be inquiring about a historical event attributed to a King Henry. However, the information provided does not specify an event that occurred on that particular date. It is important to note that during the late 15th century, Henry VII was the ruling monarch of England, having started his reign in 1485 after the War of the Roses. Henry VII was instrumental in consolidating the Tudor dynasty's power in England. His reign was marked by efforts to strengthen the monarchy’s political force over the English aristocracy, using a royal council for governance. Henry VII was also known for beginning overseas exploration, most notably supporting John Cabot's expeditions to find a northern route to Asia, which laid England's claim to the North American mainland and indirectly set the stage for future colonial aspirations.
Without further specifics on the historical context or referencing a particular Henry, it is challenging to provide a definitive answer to what actions were taken by a 'Henry' on 18th September 1493. To gain a clearer understanding of the events of that day, additional context or information would be required to pinpoint the actions of Henry VII or any other Henry that might be referenced.