You can have the statement "Everyone knows" or the question "Does everyone know". I think the question mark here relates to the opening question. But you could have the implied question "Everyone knows when....fought?". Incidentally the event is known as "the wars of the roses" (not war) because they relate to an extended period of battles and campaigns.
I think Mexico is famous for roses but not sure so you might want to look it up.
The War of the Roses
Miss, how many minutes till the bell?
war of the roses
England
No, Incorrect Grammar. Actual sentence is. This morning she received one dozen of red roses from her husband.
15th
Lancaster and York
No. Everyone has different tastes.
The War of the Roses was a dynastic rivalry between two branches of the House of Plantagenet. It was fought between the houses of Lancaster and York.
fought in England in 1455-1487 between houses of the lancaster and the house of the york
"The red roses in that yard are beautiful."The nouns are roses and yard.
The simile in your sentence is "like roses".
The House of Lancaster (Tudor)
because he fought in the battle of roses
between 1445 and 1487 in England
England and France fought The Hundred Years War. The Wars of the Roses, an English Civil War, was fought between different groups of English nobility over which side would be king, Lancaster or York.