How did the missionaries and their converts overstep their boundaries in mbanta on one occasion?

In Chinua Achebe's "Things Fall Apart," missionaries and their converts overstepped their boundaries in Mbanta when they built a church on the village's sacred land, disregarding the cultural and spiritual significance it held for the Igbo people. This act not only disrespected local traditions but also ignited tensions between the converts and their non-convert neighbors, leading to conflict and further division within the community. The missionaries' lack of understanding and respect for Igbo customs exemplified the broader theme of colonial intrusion and the disruption of traditional societies.