Maori and European populations 1836-1901

In social studies,
we have made graphs on the populations of the Maoris and the Europeans every 5 years between 1836 and 1901

Here is mine:

Questions

1. What does this graph show us?: The more Europeans that arrived, the more the Maori population decreased

2. Why do you think the numbers of Maori change?: They either went off on ships or died in the musket wars

3. Why do you think the numbers of Europeans changed?: Because more Europeans came on ships and were bred in colonies