Speaking on the steps of the Lincoln Memorial in Washington DC, he said, "We're going to unify our country.
"We're going to make America great for all of our people. Everybody, everybody, throughout all of our country. That includes the inner cities."
The president, talking about bringing back jobs, strengthening the military and the borders, he said, "We're going to do things that haven't been done for our country for many, many decades.
"It's going to change, I promise you. It's going to change."
Mr Trump had said to the crowd in the presidential ballroom: "We have a lot of smart people. I tell you what, one …show more content…
Meanwhile, billionaire investor George Soros had described Donald Trump as “an imposter, a conman and a would-be dictator.”
He said this while speaking to a packed audience at his annual dinner at the World Economic Forum in Davos. Mr Soros said he was confident Mr Trump's powers would be limited by Congress.
"He won't be able to get away [with being a dictator].
"The ideas that guide him are fundamentally contradictory. He has three chiefs of staff instead of one and his cabinet are very fragmented and fighting with each other," he said.
The hedge fund manager, who initially became famous for having made $1bn by betting on the devaluation of the pound in 1992, is reported to have lost close to $1bn after the stock market rallied following Mr Trump's win.
He also warned that Mr Trump would also divide the US further.
"Anyone who disagrees with him is not part of the people," he said.
When asked what advice he would like to give to businesses preparing for the impact of the new presidency, he said, "I'd keep as far away from it as I