Big Monday

[Amber-Sum]

17d
decree or settlement imposed without popular consent, e.g. by a military victor
d?kt?t
19d
slight upward curve of a horizontal surface, especially a road.
6 letters
k?mb?r

26 d
large tropical plant, Musa paradisiaca, cultivated for its greenskinned banana like plant.
8 letters
?l??t??n

30d
order of acquatic herbivorous mammmals that include the madders belong. 5 letters
r?b?a possibly rubia

thanks again