The great commodities boom of 2021 is facing its first big test

One of the biggest commodities booms in decades is looking for a fresh reason to power higher.
Markets from copper to oil to corn surged recently as monetary stimulus and a recovery from the pandemic tightened supplies, fueling a debate about whether raw materials are in a new supercycle.
But the rally is now wavering on worries about faster inflation, Federal Reserve hints at easing stimulus and China’s warning over measures to cool price spikes.
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