I did a little research last night. Below are a couple graphs that show very clearly Trump’s economy is a continuation of Obama’s economy. Employment continued up at the same rate as Obama’s employment. Black unemployment declined at the same rate as Obama’s economy had it declining.
In other words Trump continued what Obama had set in motion (to be honest, Bush and Obama worked on correcting the economy together at the start of Obama’s presidency. The start of The Great Recession.)
So Trump’s big claim of the greatest economy is based on a continuation of the work done before he got into office. Though, of course, he would never give credit to anyone else.