The United States and the United Kingdom have agreed to a technology partnership worth about $42 billion, the first major announcement of President Donald Trump’s state visit to Britain.

The “tech prosperity” deal focuses on artificial intelligence, quantum computing and nuclear technology. Leading technology companies are committing more than $42 billion in investments, including more than $30 billion from Microsoft for AI infrastructure and what is expected to be the U.K.’s largest AI supercomputer. Google is opening a data center with Nvidia, and other firms, including Salesforce and BlackRock, are also making commitments.

The two nations will also partner on AI research and develop quantum technology for use in the medical sector. Earlier this week, the U.K. announced joint commercia

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