It's only happened four times before, with the last time coming in 2010, when the Conservatives formed a majority coalition with the Liberal Democrats.
The shock defeat for Conservatives - despite the pre- poll projections of a comfortable majority - was seen by the British media as a "humiliation" for May to continue in her position.
Commentators had suggested that turnout, particularly among young people, would be key to the result, with the Labour benefiting from a high turnout, particularly among young people who had been inspired by Labour leader Jeremy Corbyn's campaign.
The Scottish National Party of First Minister Nicola Sturgeon, which has dominated politics north of the border for a decade and called for a new independence vote after Brexit, lost 21 of the 56 seats it won in 2015.
The election result saw May scramble to form a minority government to have any kind of Commons majority. British citizens approved the plan in a vote previous year. "Let's get on with the job", he said.
What does this mean for markets? The country would also gain full control over its borders.
British media has been awash with the fact that this snap election has been a political gamble gone wrong for the Conservative party and has thrust the United Kingdom into another uncertain political environment.
Scotland voted to remain in the European Union, and Ms Davidson has called for a softer approach to the withdrawal process.
The critical damage Theresa May wreaked on her chances of winning the election during a disastrous campaign has been laid bare in a poll published by a senior Conservative donor.
After the voting, Corbyn called on May to resign. However, the PM has insisted that she plans to remain in office. But we'll put up our demands and our message and we'll assert those.
Rachel Sheard, who was casting her vote near the site of Saturday's attack in London, said the election had not gone as expected - and that it certainly wasn't about Brexit. Without the amendments, he said Labour would try to vote down the speech. Britain looks set for months of political chaos.
May had promised a "hard Brexit" if Britain did not like the terms of the divorce negotiated with the EU.
She acknowledged her sadness at the loss of her majority in the general election in a statement to broadcasters on Friday.
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