This is the name given to the purchase of the alaska territory from russia in 1867, for which the u. s. paid $7 million.

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

not sure might be he acquired the entire oregon territory from great britain