(Bloomberg) -- Economic activity increased slightly in November after little change in preceding months, and US businesses grew more upbeat about demand prospects, the Federal Reserve said in its latest Beige Book survey.Most Read from BloombergAs Wars Rage, Cities Face a Dark New Era of Urban DestructionRiyadh Metro Partially Opens in Bid to Ease City’s Traffic Jams“Though growth in economic activity was generally small, expectations for growth rose moderately across most geographies and sector