reaction against the policies of the previous 25 years, which had brought the world dangerously close to nuclear war on several occasions, and because the US was in a weakened position following the failure of the Vietnam War. As part of détente, the US also restored ties with the People's Republic of China, partially as a counterweight against Soviet expansionism. The US–Soviet geopolitical rivalry nonetheless continued through the decade, although in a more indirect faction as the two superpowers jockeyed relentlessly for control of smaller countries. American and Soviet intelligence agencies gave funding, training, and material support to insurgent groups, governments, and armies across the globe, each seeking to gain a geopolitical advantage and install friendly governments. Coups, civil wars, and terrorism went on across Asia, Africa, and Latin America, and also in Europe where a spate of Soviet-backed Marxist terrorist groups were active throughout the decade. Over half the world's population in the 1970s lived under a repressive dictatorship. In 1979, a new wrinkle appeared in the form of Islamic fundamentalism, as the Shia theocracy of Ayatollah Khomeini overthrew the Shah of Iran and declared itself hostile to both Western democracy and godless communism. People were deeply influenced by the rapid pace of societal change and the aspiration for a more egalitarian society in cultures that were long colonized and have an even longer history of hierarchical social structure. The Green Revolution of the late 1960s brought about self-sufficiency in food in many developing economies. At the same time an increasing number of people began to seek urban prosperity over agrarian life. This consequently saw the duality of transition of diverse interaction across social communities amid increasing information blockade across social class. Other common global ethos of the 1970s world included increasingly flexible and varied gender roles for women in industrialized societies. More women could enter the work force. However, the gender role of men remained as that of a breadwinner. The period also saw the socioeconomic effect of an ever-increasing number of women entering the non-agrarian economic workforce. The Iranian revolution also affected global attitudes to and among those of the Muslim faith toward the end of the 1970s. The global experience of the cultural transition of the 1970s and an experience of a global zeitgeist revealed the interdependence of economies since World War II, in a world increasingly polarized between the United States and the Soviet Union.