In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: Some do genealogy , some try to protect historical buildings , some focus on certain towns , countries , people , railroads , or religious groups .
A: 
Historical societies vary in specialization , with focuses ranging from specific geographical areas such as countries or towns , universities , railways , ethnic and religious groups , to genealogy , pioneer history , and the preservation of antiques or historic buildings .