"throughout the whole world," by 1910, from global + -ly (2).
Entries linking to globally
global adj.
1670s, "spherical," from globe + -al (1). Meaning "worldwide, universal, pertaining to the whole globe of the earth" is from 1892, from a sense development in French. Global village first attested 1960, popularized, if not coined, by Canadian educator Marshall McLuhan (1911-1980).
Postliterate man's electronic media contract the world to a village or tribe where everything happens to everyone at the same time: everyone knows about, and therefore participates in, everything that is happening the minute it happens. Television gives this quality of simultaneity to events in the global village. [Carpenter & McLuhan, "Explorations in Communication," 1960]
-ly 2
common adverbial suffix, forming from adjectives adverbs signifying "in a manner denoted by" the adjective, Middle English, from Old English -lice, from Proto-Germanic *-liko- (cognates: Old Frisian -like, Old Saxon -liko, Dutch -lijk, Old High German -licho, German -lich, Old Norse -liga, Gothic -leiko); see -ly (1). Cognate with lich, and identical with like (adj.).
Weekley notes as "curious" that Germanic uses a word essentially meaning "body" for the adverbial formation, while Romanic uses one meaning "mind" (as in French constamment from Latin constanti mente). The modern English form emerged in late Middle English, probably from influence of Old Norse -liga.