There are a hundred years in a century.
No, the word "century" is not capitalized unless it begins a sentence. So "thirteenth century" would not be capitalized in the middle of a sentence.
The century has passed because it is now 2000.
"Assumes" in the given sentence is a verb.
Yes it can be used in as sentence it was used in the mid 20th century but is not as common now.
At the beginning of a sentence. It doesn't need to be capitalized.
Much of Africa was colonized by European nations during the nineteenth century. The year 2001 marked the start of a new century.
The genealogist traced my ancestry back to 18th century Germany.
The Civil War was fought during the ninteenth century.
I want to have this project finished during this century, please. The century had hardly begun when another regional conflict threatened to spiral into a major war.
Nationalize means to make distinctly national. Church designs in that century were nationalized.
In the 19th century, having your picture taken was quite a novelty.
The electoral college was devised in response to the political realities of the late 18th century; in the 21st century it seems to be anachronistic.