Answer:
Busbecq's purpose behind writing Sleiman, the Magnificent is to express his impressions of the Turkish sultan as he wished to offer a detail of such a splendid personality who ruled the empire of Ottoman with extreme brilliance.
Step-by-step explanation:
The key purpose of Busbecq for communicating about Suleiman the magnificent is to 'provide the caricature of the sultan which made him become one to take the Ottoman Empire at its due height.' The use os conjunction 'as' adds further detail regarding the reason for which Busbeq offers the description of Sultan. His purpose seems to be justified through the accounts like 'his expression...smiling...has a sternness', 'dignity of demeanor...general physical appearance made him worthy', 'the sixtieth year...enjoys good health' as he wants to maintain fear in 'foreign potentates.'