In 1873, San Francisco introduced the cable car system. This mode of transportation was invented by Andrew Smith Hallidie. He was inspired to build this system as a result of a bad accident. A street carriage slid backwards, killing the horses pulling it. He was shocked and decided to do something about it by designing a different form of transportation that would prevent something like that from happening again.
Answer:
the trade of African Americans by boat across the Atlantic and West Indies
Explanation:
Anything written about Abraham Lincoln by someone who didn't personally know him or someone who lived during that time.
A, rats because the rats would carry infected fleas
