LONDON (Reuters) -The United States and Britain plan to announce more than $10 billion in economic deals this week as part of U.S. President Donald Trump's state visit, senior U.S. officials said on Monday. The two governments are expected to seal a trade agreement with three pillars: a new science and technology partnership to strengthen the tech sectors of both countries, cooperation in civil nuclear power, and advances in defense technology cooperation, the officials said in a telephone briefing. Several U.S. tech business leaders are expected to be in attendance for the state visit, the officials said.