Question: What is an aspect of the history of Iowa, which was formed on December 28, 1846?
Paraphrase: What is an perspective of the history of Iowa, which was shaped on December 28, 1846?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q5864963 wdt:P1269 ?answer . ?answer wdt:P571 ?x FILTER(contains(YEAR(?x),'1846'))}