Answer:
The larger tick marks appear for an event that is on the timeline and the smaller ones are basically non existent
Explanation:
Just trust me ;)
Frederick Douglass began his life as an illiterate slave. After a small start from Sophia Auld, he continued to educate himself, learning to read and write- his road to freedom. He made a name for himself by boldly illuminating the atrocities of slavery<span>, passionately impacting the movement to have it abolished.</span>
The process by which people concentrate on particular skill areas to compensate for losses in other areas is called selective optimization. It is a common occurrence in people where they tend to focus more on what they know they are good at and continue improving that area.
