Explain the expression “like monumental Crusaders as to their legs."

I met a traveller from an antique land,Who said—“Two vast and trunkless legs of stoneStand in the desert. . . . Near them, on the sand,Half sunk a shattered visage lies, whose frown,And wrinkled lip, and sneer of cold command,Tell that its sculptor well those passions readWhich yet survive, stamped on these lifeless things,The hand that mocked them, and the heart that fed;And on the pedestal, these words appear:My name is Ozymandias, King of Kings;Look on my Works, ye Mighty, and despair!Nothing beside remains. Round the decayOf that colossal Wreck, boundless and bareThe lone and level sands stretch far away.”

Read the following text from a myth. This excerpt is about Achilles and Agamemnon.

What is the main idea of this excerpt from King’s letter?  (2-3 sentences and a direct quote from the text)

“And on the pedestal, these words appear:My name is Ozymandias King of Kings.Look on my Works, ye Mighty, and despair!Nothing beside remains. Round the decayOf that colossal Wreck, boundless and bareThe lone and level sands stretch far away.”QUESTIONS:i. What is the implied message of the given poetic text?ii. Point out the use of irony in the given stanza.iii. Explain the tone and mood of the given stanza?

Alanson mentions the saying in science that "we stand on the shoulders of giants". In your own words, explain what this metaphor means.