This business law assignment solution addresses two key legal scenarios. The first part analyzes the legislative powers of the Australian Commonwealth under the Constitution, specifically concerning external affairs and international treaties, with a focus on the Human Egg Production Act 2016 (Cth) and its relation to a hypothetical treaty on chicken treatment. The second part examines partnership law in South Australia, governed by the Partnership Act 1891. It covers business name registration, agency of partners, liability for actions of partners, and the implications of negligence and debts within a partnership. The solution provides a comprehensive analysis of legal principles and their application to the given scenarios, including references to relevant case law and legislation.