Where the sentences come from
Chronology and theme lines are taken from MPI chapter pages (Michigan, Greater Calgary), from the Webex Events blog post of 15 March 2023, from ALHI’s GMID note updated for 2023, and from U.S. Travel / Meetings Mean Business public copy. Euromonitor’s old product name appears in university library guides. The GM login is described on gmid.gm.com. The drought dataset is catalogued by UKCEH with DOI 10.5285/f5ce92b0-03e8-4719-82ff-c62e6ebe927b.
Where a first-year date is soft — “mid-1990s” for Edmonton — the page keeps the range instead of inventing a day. Campaign impression figures are labelled as campaign figures.