Examlex
Give one reason why taxing gasoline heavily would be difficult in the United States.
Unifying Themes
Central ideas or motifs that bring together various elements of a story, theory, or research project into a cohesive whole.
Researchers
Individuals who conduct detailed study and experiments in various fields to advance knowledge and understanding.
Review Articles
Scholarly articles that summarize the current state of research on a particular topic, often identifying trends, theories, and future directions.
Empirical Studies
Research that relies on observation or experiment rather than theory, often involving the collection and analysis of data.
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