Kamla Persad-Bissessar has become the first female Prime Minister of Trinidad and Tobago as her five-party coalition headed for a strong victory in snap elections in the former British colony. <br/>A subdued Prime Minister Patrick Manning conceded defeat some five hours after the close of polls. <br/>The 58-year-old has promised to increase pensions and create a multi-million-dollar fund for sick children in a campaign focused on change.