European shares fell on Friday as uncertainty across major economies added to headwinds for investors even as the rate easing cycle gets under way, while a global outage hit services from airlines, banks and financial services. It has been a turbulent week in markets, with a tech selloff sparked by deepening Sino-U.S. trade tensions, uncertainty over U.S. President Joe Biden’s fate in the presidential race, disappointing Chinese economic data and a lacklustre third plenum outcome casting a shadow over the global mood. In the foreign exchange market, Tokyo’s recent bouts of intervention also kept traders on edge. “We could just...