From Longman Dictionary of Contemporary Englishusher something ↔ in phrasal verbSTART something/MAKE something STARTto cause something new to start, or to be at the start of something new The discovery of oil ushered in an era of employment and prosperity. → usher→ See Verb table
Examples from the Corpus
usher in• De La Vina ushered in a new era for the agency here.• Finally, it ushered in a period of an increasing interlocking of economies on a world scale dominated by a capitalist centre.• Perhaps his demise through age, ill-health or death might usher in an era of political instability.• The immense surrogate slave power released by the steam engine ushered in the Industrial Revolution. 