The purpose Mrs. Bradford had in writing Harriet Tubman's biography twice was to raise money in order to. 1O. help Harriet free more slaves
2O. save Harriet's Auburn home and build a hospital for old and disabled African Americans
3O. establish more Underground Railroad stations
4O. provide a safe haven for the fugitives in Canada

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

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