What are the direct and indirect changes that occur in Achebe’s Things Fall Apart after the arrival of the missionaries?

The direct changes to the village of Umuofia after the arrival of the white missionaries involve the establishment of European trading outposts, stores, schools, and churches in the region. When the European missionaries arrive, they initially decide to take a passive approach to colonization by establishing trading posts, stores, and schools, which benefit the villagers and earn their trust. The Igbo villagers are attracted to the benefits of trade, new marketplaces for their crops and services, and the opportunity to gain a valuable education. The stores, trading posts, and schools open the villagers up to foreign European culture, which allows the missionaries to introduce the Christian religion to the villagers in a favorable manner. They initially recruit the outcasts of Umuofia, and the church gains popularity among the pariahs of the village until respected individuals begin converting to Christianity. Subsequently, many villagers convert to Christianity, which creates disparity and dissension among the citizens of Umuofia.
The indirect effects of the arrival of European missionaries involve the gradual destruction of traditional Igbo culture. As the Christian religion and European influence gain popularity throughout the village and region, traditional Igbo culture and customs lose their favor and are slowly replaced by European culture. Achebe illustrates how European colonists purposely undermine traditional Igbo culture and religion by introducing schools, stores, and churches to the villagers, which allows them to establish a bureaucracy in the region and completely colonize the African territory.