Which transportation breakthrough had the GREATEST impact on the economic development of the American frontier in the late-
1860s?
A)
the Erie Canal
B)
the automobile
C)
the interstate highway system
D)
the Transcontinental Railroad
Eliminate

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How were slavery and indentured labor in american colonies similar

In harriet's country, the ten provincial states that make up the nation hold the majority of power, with a small central government handling foreign policy and trade. harriet lives under a government best described as which of the selections listed below? select one: a. parliamentary b. federal c. confederal d. unitary