The two nations share joint histories and similar cultures, such that there are significant numbers of both populations who embody a transnational identity.

[15] Cultural relations in the Trans-Tasman support a cooperative relationship with the sharing of art between Australian and New Zealand galleries.

[13] The harmonization of trans-Tasman food standards led to lower compliance costs for industry, fewer regulatory barriers, and more consumer choice.

[19] In 1996, Australia and New Zealand agreed to create a single market for air transport that was distinct from the previous agreements which were more restrictive.

Some notable changes that affect Trans-Tasman travel include allowing Australia and New Zealand to operate in each other's domestic markets.

Air transport can significantly affect the economy of the Trans-Tasman through its impact on the tourism, logistics and high value-added manufacturing sectors.

[13] Economic and social history between the two countries during early colonial time was influenced by the sealing and whaling industry which saw Trans-Tasman migration.

[21] In the 21st century the movement is enabled by the Trans-Tasman travel arrangement which governs the regulatory frameworks and supports high international mobility across the Tasman.

[25] This migration is attributable to economic development driven by globalisation, technological change, business cycles, demographic dynamics, and perceptions.

[16] An instance of influence across the Trans-Tasman for sports law is New Zealand's adoption of anti-doping regulations similar to Australia.

[17] The role of sport has influenced the relationship between the two nations, and history has seen poor sportsmanship have a dampening effect in the Trans-Tasman space.

An instance is the 1981 cricket series between Australia and New Zealand where the under-arm bowling incident struck controversy between the nations.

[17] Sport holds a particular importance for New Zealand, and is described by academics as one of their greatest soft powers in the context of politics and diplomatic relations.