内容摘要：Trump has given a boost to the right-wing, with some of them gathering outside the US embassy in South Africa's capital, Pretoria, in February with placards that read: "Make South Africa Great Again" - an adaptation of Trump's "Make America Great Again".

Trump has given a boost to the right-wing, with some of them gathering outside the US embassy in South Africa's capital, Pretoria, in February with placards that read: "Make South Africa Great Again" - an adaptation of Trump's "Make America Great Again".

"For a democratically elected president, I cannot remember at any point in Nigerian history where you have this high concentration of a particular ethnic group holding most of the sensitive positions," history professor Tijjani Naniya told the BBC.This is not just about what has happened in the past but it could have an impact on the unity and even the future of the country, the professor said.

"For me, the fear is what if the next president continues on this path and picks most of the sensitive positions from his ethnic group, it diminishes the feeling of belonging among the rest and also reduces belief in democracy," he said.In the last two years, many northerners, mostly Hausa-Fulanis, have looked at the apparent direction of travel with alarm.The current men (there are no women) in charge of the NNPC, the police, customs and the Economic and Financial Crimes Commission (EFCC) all replaced northerners.

The removal of Abdulrasheed Bawa, a Hausa, as boss of the EFCC in 2023 just two years after he was appointed was especially controversial.He was arrested, accused of abuse of office and detained for more than 100 days before the charges were dropped.

He was replaced by Ola Olukoyode, an ethnic Yoruba.

Some from the north felt Mr Bawa was unfairly treated and pushed aside to make way for Mr Olukoyode.US President Donald Trump has also repeatedly said the country would be better off as a 51st US state.

At the airport, the Queen was given a bouquet of flowers and she and the King were greeted by school groups from the provinces of Ontario and Quebec.Some of the children who attended the arrival are enrolled in the Duke of Edinburgh programme, a global youth development programme launched by the late Prince Phillip - the King's father - in 1956.

After the airport greeting, the King and Queen travelled to Lansdowne Park in central Ottawa, where they met well-wishers, local community groups, farmers, and vendors.The King took part in a ceremonial street hockey puck drop.