Complex sentence: Other Canadian stamps have featured the poppy, including ones in 1975,2001,2009,2013 and 2014, and other postal authorities have employed the poppy as a symbol of remembrance, including those of Australia, Gibraltar, the United Kingdom and United States.
Split into simpler sentences: Other Canadian stamps have featured the poppy, including ones in 1975,2001,2009,2013 and 2014. Other postal authorities have employed the poppy as a symbol of remembrance, including those of Australia, Gibraltar, the United Kingdom and United States.