useless trivia: What Word Means: Pertaining To Deep Parts Of The Ocean?

Questions

In 1764 Ann Ward---------- , English Gothic novelist (The Italian), born. ?

In 1776 Declaration of Independence is read aloud to Gen. George Washington's troops in---------- . ?

In 1802 Thomas---------- , invented the first commercially successful electric motor, born. ?

In 1802 Thomas Davenport, invented the first commercially successful---------- , born. ?

In 1816 Argentina declared its independence from---------- . (Argentinian Independance Day) ?