Вы искали: defriche (Французский - Английский)

avec la construction de digues permanentes, qui a commence apres 1894, on a defriche et drain6 les terres, et on a interrompu les cycles naturels des inondations.
following permanent diking, which began after 1894, the land was cleared and drained, and the natural cycles of flooding were halted.

et pourtant, ils ont navigué et defriché ce continent de l'atlantique au pacifique et des grands lacs jusqu'à l'arctique.
yet they navigated and settled this land from the atlantic to the pacific, and from the great lakes to the arctic.