Questions & Answers about Malgraŭ la longa deklivo ni rigardis la pejzaĝon.
Malgraŭ is a preposition meaning despite or in spite of. It introduces a contrast:
- Malgraŭ la longa deklivo = Despite the long slope
So the sentence sets up the idea that the long slope might have made things difficult, but we still looked at the landscape.
Because malgraŭ is a preposition, and in Esperanto prepositions normally take the basic noun form, not the accusative.
So:
- la longa deklivo = correct after malgraŭ
- la longan deklivon = not correct here
Also, the adjective matches the noun:
- deklivo = singular noun
- longa = singular adjective
Neither needs -n here.