Final answer:
The subject of this question is Social Studies, specifically the distribution of power between states and the federal government in the United States. This practice can differ in particular areas within the state, resulting in variations in policies and laws.
Step-by-step explanation:
The subject of this question is Social Studies. Social studies is the field of study that focuses on society, human behavior, and the interactions between individuals and groups. It encompasses various disciplines such as history, geography, economics, sociology, and political science.
In this context, the long-standing practice being referred to could be the distribution of power between states and the federal government in the United States, which is a key aspect of federalism. This practice can differ in particular areas within the state, leading to variations in policies and laws.
For example, the United States Constitution grants states the flexibility to set policy across a range of controversial areas, such as abortion and marijuana use. This has resulted in a patchwork of legal decisions and variations in policies from state to state, reflecting the attitudes of government officials, public opinion, and other factors.