What were the sumerian's buildings and art like.?

What makes this speech a primary source? o a. the words are spoken by the president himself. o b. it uses narrative to keep the reader's attention. o c. it was written over 70 years in the past. o d. it contains a strong historical argument.

Apurging of emotions, specially pity and fear

What deadly disease cost many workers their lives before dr. william gorgas found a treatment?