After a long time of leftist parties leading in world politics, recent global issues have lead to a large rise in popularity of right wing supporters. Donald Trump became the face of political incorectness and as such he brought out many people who had been afraid to speak out their thoughts just to be called racist,intolerant etc.
Anti-globalist sentiments within the right-wing have been growing for several years in Europe. He didn't invent the trend. He saw that it was happening and he decided to cater that message to an American audience, but those who have studied international affairs for a while know that this is nothing new.