During the 19th century, ______ was a most important reason for a century-long population decline in Ireland.

The natural disasters in New Zealand may include ______.

According to the Waitangi Treaty, if the Maoris want to sell land, only ______ will have the right to buy.

Most of the land in Australia’s rural areas is used ______.

Sydney, the largest city in Australia, is the capital of ______.