US President Donald Trump is lending Africa a helping hand—through policies that have contributed to a weaker US dollar. Since the start of Trump’s second term, the US dollar has depreciated by roughly 12 percent against a broad basket of currencies, including many across Africa. For African economies that borrow and trade in dollars, a weaker greenback eases debt burdens and lowers import costs. In this way, a weaker dollar provides these African countries with unexpected breathing room in an otherwise difficult global financial environment. […]