durant

• Prep

  during, while

• Postp
• Verb

siècles

plural of siècle

a

• Character

  The first letter of the French alphabet, written in the Latin script.

• Noun
• Pron
• Verb

des

• Article

  1. plural of un (“some; the plural indefinite article”)
  2. plural of une (“some; the plural indefinite article”)
  3. plural of du (“some; the plural partitive article”)
  4. plural of de la (“some; the plural partitive article”)
  5. plural of de l’ (“some; the plural partitive article”)

• Contraction

sources

plural of source

importantes

feminine plural of important

rivières

plural of rivière

une

• Num

  feminine singular of un

• Article
• Noun