Some host countries are forcibly sending refugees back to their home countries stating that such as the situation in their home country is safe. Many refugees who were sent like this went through brutal violence and some people were even disappeared.
Integration of all the transportation systems (roads, railways, ports, aviation) means roads will be connected to railways, railways will be connected to ports etc. This will enable the easy movement of people from even remotest areas to any area across the country.
The goals of AUKUS and Quad are completely different. AUKUS was formed for cooperation in security and defence interests. On the other hand, Quad countries pledged to work on the most urgent global challenges such as COVID-19 vaccination, climate change, counter-terrorism etc.