A suffix
Suffix is at the end of a word but prefixes are at the beginning of the word.
Answer:
They were God's and built many structures and are a big civilization that changed modern world.
Answer:
To inform a general audience about Frida Kahlo's life and art; her tone is formal.
Explanation:
The words used are not entertaining, they are complete sentences and the tone is serious.
That would be a checklist