Complex sentence: Although there was debate in Australia's first Parliament after federation to consider adopting the metric system, metric units first became legal for use in Australia in 1947 when Australia signed the Metre Convention (or "Convention du Mètre").
Split into simpler sentences: Although there was debate in Australia's first Parliament after federation to consider adopting the metric system, metric units first became legal for use in Australia. In 1947 when Australia signed the Metre Convention (or "Convention du Mètre").