What did the invention do? How did it impact society? and Did it improve communication, transportation, power/energy, or other.? Plz Help and Thank you!!! All four of them ask the same questions above.

1. Oil-Drip cups/Lubricators

2. Fold-away bed

3. African American beauty products

4. Traffic Signal

a direct vote in which an entire electorate is invited to vote on a particular proposal. this may result in the adoption of a new law.  

a agree i agree becuase it is very importnat for example it can tlel you about your past for exmaple   the first culture was the semerians which people are sitll tryignt o uncover there secrets the wall is just anohter treasure that has thousnads of secrets in it to be uncovered

b

being given a fair trial before a jury