There are 8 important currencies - AUD, CAD, CHF, EUR, GBP, JPY, NZD and USD.
Some events are closely linked to some currencies:-
Some of them move together most of the time, like NZD with AUD, and CHF with EUR. But not always perfectly. New Zealand’s economy is smaller than their major trading partner, Australia, while Switzerland has a similar relationship to the Euro-zone.
When China’s economy slows down, AUD tends to fall (as Australia is a heavy exporter to China), therefore so does NZD. When Germany’s economy slows down, the EUR tends to fall (as Germany is the largest economy in the Euro-zone, therefore so does CHF.
When oil prices fall, CAD tends to fall, as Canada is such a major oil extractor and exporter.
But sometimes a move towards risk aversion can trump all the good news out there. A reduction in risk tolerance tends to drive capital from speculative currencies towards safe haven currencies - so, away from AUD, NZD and CAD (and possibly even USD in serious cases), and towards CHF and JPY (and possibly USD if things are not looking too bad for the US). If risk aversion is driving banks to sell AUD in order to buy JPY because of some issue half the globe away from Australia, then almost no Australian good economic news will stop that trend.