Had the desire to understand nuclear family vs extended family…
The term nuclear family was popularized in the 20th century. In the United States, it became the most common form of family structure in the 1950s, 1960s and 1970s. Since that time, the number of North American nuclear families is gradually decreasing, while the number of alternative family formations has increased; this phenomenon is generally opposed by members of such philosophies as social conservatism or familialism, which consider the nuclear family structure important.