"Institutional Training in Many Lands Not only in the South were institutions called for, for the education of workers; centers of training were to be established in many lands,—in “England, Australia, Germany, and Scandinavia, and other Continental countries as the work advances.” LS 382"
"But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judea, and in Samaria, and unto the uttermost part of the earth."
Both passages deal with spreading the message to different geographical locations. Acts 1:8 is a general command, while EGW's passage is more specific about locations for training centers.