Global shares tumbled on Friday after the U.S. slapped dozens of trading partners with steep tariffs, while investors anxiously awaited U.S. jobs data that could make or break the case for a Federal Reserve rate cut next month.

U.S. President Donald Trump's new tariff rates of up to 41% on U.S. imports from dozens of countries have drawn expressions of relief from some countries that negotiated a deal or managed to whittle t