European shares bounced off 14-month lows in early trading on Tuesday after four straight sessions of heavy selling, although investors' mood remained sensitive to tariff-related developments.

The U.S. stock market has gone taken a nosedive since President Donald Trump announced tariffs for many countries around the world. Here's what to know.

The S&P 500 (SNPINDEX: ^GSPC) has plunged 17% from the record high it reached in February, putting the index deep in market correction territory. The decline was caused by the radical change in U.S. trade policy pushed by President Trump,