Which act initiated taxation on opium and coca products?

The Harrison Act is the correct answer because it was the first federal legislation in the United States to regulate and tax the production, importation, and distribution of opiates and coca products. Enacted in 1914, the Harrison Narcotics Tax Act aimed to control and restrict the use of these substances, which were becoming increasingly associated with addiction and abuse. The Act required those who distributed opiate and coca products to register and pay a special tax, thus placing government oversight on their distribution and use.

This legislation marked a significant shift in the U.S. approach to drug use and represented the beginning of a more organized federal response to drug-related issues, emphasizing the need for regulation in an attempt to tackle addiction and its associated social problems. It set the groundwork for future drug control laws and policies.