LONDON, Oct 24, 2019 - (ACN Newswire) - WARC, the international marketing intelligence service, has found that advertising spend is set to rise next year across all 19 product categories monitored by WARC, culminating in global growth of 6.0% to $656bn. This is a marked uptick from the 2.5% rise estimated for 2019 but is down on the 7.3% growth...