Donald Trump has picked 39-year-old senator JD Vance, once a fierce critic, to be his vice presidential running mate, on the same day he was officially nominated as the US Republican Party’s candidate for November’s presidential elections. Trump received the necessary majority of delegates’ votes at the Republican National Convention in Milwaukee, Wisconsin on Monday, a national party meeting that began just two days after an attempt on Trump’s life that shocked the country. In what was his first public appearance following the assassination attempt on him, Trump joined the convention towards …