Across and Over the length and breadth of

Across adverb - From one side to the other of an intervening space.

Over the length and breadth of and across are semantically related. in throughout topic. In some cases you can use "Over the length and breadth of" instead a preposition "Across".

Across and over the length and breadth of are semantically related. Sometimes you can replace term "Across" with "Over the length and breadth of", this terms are similar.