The relatively high price of land in the central core of cities lead to the first multi-story buildings, which were limited to about 10 stories until the use of iron and steel allowed for higher structures. The first purpose-built office block was the Brunswick Building, built in Liverpool in 1841. The invention of the safety elevator in 1852 by Elisha Otis saw the rapid escalation upward of buildings. By the end of the 19th century, larger office buildings frequently contained large glass atriums to allow light into the complex and improve air circulation. Na go ka direga se se swanago ge go tliwa tabeng ya go kwešiša Modimo? Ba bantši ba dumela gore tlaišego ke leswao la gore ga gona Modimo. Lega go le bjalo, ba bangwe bao ba kwešišago lebaka leo ka lona Modimo a dumelelago tlaišego, ba kgodišegile gore o gona. gafa. 0 tswa go inyadisa? 0 tla di bona ka gore ke moo