(Bloomberg) — Growth in US business activity slowed in March to an almost one-year low and prices paid for materials and other inputs picked up in the wake of the US-Israel war with Iran. The S&P Global flash March composite index fell 0.5 point to 51.4, data released Tuesday showed. Figures above 50 indicate expansion. A gauge of prices paid increased more than 3 points to the highest level since May. The decline in the overall composite measure was due to the weakest growth in services activity in a n ...