Among Mr Trump’s immediate pledges – taking the Panama Canal back under US control, after alleging China is operating the canal and accusing Panama of charging the US too much to use it.
The canal, built by the United States in the early 1900s, provides a vital trade route for shipping between the Pacific and Atlantic oceans.
But Mr Trump’s threat to seize it back has reignited tensions over the US invasion of Panama more than 35 years ago.