Why were the voices of former slaves essential to the success of the abolishonist movement?

Describe the technology advancements that lead to explorers being able to sail great distances. [[ps: doesn't explain where. i am only speculating it's in europe.

Keep these two main factors in mind when selecting type for your business communicationsthe audience influences type choice.there are good types and bad types.type should be easily read.when your message is important type selection doesn't matter

What are the biggest challenges facing the average american citizen today? explain.