By Staff, Agencies

US President Donald Trump delivered the final speech on Thursday, the fourth and final day of the Republican National Convention.

Earlier announced by his party to be the GOP presidential candidate, Trump officially accepted the nomination during his remarks.

"With a heart full of gratitude and boundless optimism, I proudly accept this nomination for president of the United States", Trump said.

The US president vowed to return America to its pre-COVID levels, promising to rebuild the country and achieve "record prosperity".

"We will lead America into new frontiers of discovery and reach new heights of achievement", he said.

Throughout the speech Trump verbally attacked his rival, Democratic candidate Joe Biden, even calling him a "destroyer of American greatness" at one point.

Commenting on Biden’s record, Trump labeled it "a shameful roll call of the most catastrophic betrayals and blunders in our lifetime".

"For 47 years, Joe Biden took the donations of blue-collar workers, gave them hugs and even kisses", he said. "And told them he felt their pain – and then he flew back to Washington and voted to ship their jobs to China and many other distant lands... [] Joe Biden spent his entire career outsourcing their dreams and the dreams of American workers, offshoring their jobs, opening their borders, and sending their sons and daughters to fight in endless foreign wars, wars that never ended".

Trump further slammed Biden as "weak", and denounced the Democrats as "failed political class".

"He [Joe Biden] takes his marching orders from liberal hypocrites who drive their cities into the ground while fleeing far from the scene of the wreckage", Trump asserted.

"These same liberals want to eliminate school choice, while they enroll their children in the finest private schools in the land. They want to open our borders while living in walled-off compounds and communities. They want to defund the police, while they have armed guards for themselves".