BANGALORE/SYDNEY (Reuters) – Dwindling demand cut factory activity across much of Asia and Europe in September, sending it to multi-month lows and raising the chances that global growth will slow in the months ahead. Despite gentler price rises, China’s figures were mired barely above contraction, Britain slumped, and the drop in new orders did not even spare Germany, the strongest member of the euro zone currency bloc, or France, its No. 2 economy.