At the end of your presentation the main points should be

The answer is: Summarized

Presentation could often take more than 45 minutes and it is very hard for most audiences to actually pay attention to the whole thing and remember every single points that you want to conveys.

Summarizing your points at the end of your presentation would help the audiences to remember the points that they might've missed during the presentation.

c.it was a major banking and commerce center.

d.leonardo da vinci

d. to fix corruption and problems in the catholic church

d. to reform the catholic church from within

a. human faces are presented in an idealized, spiritual manner.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane