The global lumber shortage was primarily caused by a combination of increased demand during the COVID-19 pandemic, as more people undertook home renovations and construction projects. Supply chain disruptions, including mill shutdowns and transportation delays, further exacerbated the situation. Additionally, wildfires and other environmental factors reduced timber supply in key producing regions, leading to higher prices and limited availability.
an embargo from Arab countries, created shortage
The U.S.A. and Mexico are countries that Canada exports its lumber to.
they import it from other countries
somalia
shortage of water
It caused a labor shortage
There was no manpower shortage, it was just that the Germanic peoples who flooded in from Eurasia greatly outnumbered the Romans.
drought
Human activities and drought are some of the factors that caused the Delta Smelt cause a water shortage.
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shortage of money which is ultimately caused by Politics!
a shortage of workers