How and why did the native americans present a threat to the new republic

Population growth during the gilded age was due in large part to unemployment among workers. an improved food supply. better health care. immigration to the united states.

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

Who was the top of the feudal system hierarchy