BUR #28263 has been approved by @nonamethanks.
rename pre-columbian_architecture -> mesoamerican_architecture
create implication mesoamerican_architecture -> architecture
create alias aztec_architecture -> mesoamerican_architecture
create alias mayan_architecture -> mesoamerican_architecture
The name "pre-columbian_architecture" makes it sound like it could be any indigenous architecture in the Americas, but in practice it's only used for Mesoamerican architecture. (E.g. Posts containing Machu Picchu are not tagged pre-columbian_architecture.)
aztec_architecture and mayan_architecture should be aliased to mesoamerican_architecture, for the same reason we alias chinese_architecture and japanese_architecture to east_asian_architecture.