MISSISSAUGA — The Ontario government has secured a $820 million investment from AstraZeneca, a global biopharmaceutical business, to expand the company’s research and development (R&D) facilities in Mississauga and relocate the company’s Canadian headquarters to a larger, state-of-the-art office. The investment will create over 700 new, good-paying jobs across Ontario’s life sciences sector and further establish the province as a global …