The hippie subculture began its development as a youth movement in the United States during the early 1960s and then developed around the world.
Subculture, a concept from the academic fields of sociology and cultural studies, is a group of people within a culture that differentiates itself from the parent culture to which it belongs, often maintaining some of its founding principles.
The United States of America, commonly referred to as the United States or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
A hippie is a member of a liberal counterculture, originally a youth movement that started in the United States and the United Kingdom during the mid-1960s and spread to other countries around the world.
The Sixties - The Years That Shaped a Generation (TV)  by Arthritix Asterix
Its origins may be traced to European social movements in the 19th and early 20th century such as Bohemians, and the influence of Eastern religion and spirituality.
The Eastern religions are the religions originating in the Eastern world— East, South and Southeast Asia —and thus having dissimilarities with Western religions.
Turn On, Tune In, Drop Out: Counterculture of the 1960s by Sully0020
From around 1967, its fundamental ethos — including harmony with nature, communal living, artistic experimentation particularly in music, and the widespread use of recreational drugs — spread around the world during the counterculture of the 1960s, which has become closely associated with the subculture.
The counterculture of the 1960s refers to an anti-establishment cultural phenomenon that developed first in the United States and then spread throughout much of the Western world between the early 1960s and the mid-1970s, with New York City, and San Francisco being hotbeds of early countercultural activity.
A counterculture is a subculture whose values and norms of behavior differ substantially from those of mainstream society, often in opposition to mainstream cultural mores.