Consumer confidence across the United States plunged to an all-time low this month, as Americans grapple with anxiety over the war in Iran, new data revealed.  The University of Michigan’s long-running Survey of Consumers tracks how Americans feel about the economy, their personal finances and spending — shaped by factors like inflation, the cost of living and global conflicts.  Earlier this month, preliminary data showed the consumer sentiment dropped a drastic 11% to a historic low of 47.6 — a level below anything recorded in the post–World War II era, including during the Great Recession, the pandemic slump, and the subsequent surge in inflation, CNN reported.  Preliminary data showed the consumer sentiment dropped a drastic 11% to a historic low of 47.6 in April — a level below anything recorded in the post–World War II era.…