Why were tariffs first supported, then opposed , by American companies in the period after the Civil War?

This is the belief that a nation must develop and maintain a strong military force in order to pursue and defend its national interests.

The byzantine empire weakened after asia minor

What is the significance of the battle of saratoga? a. the defeat at saratoga allowed the british to invade new england by land. b. after the defeat at saratoga france refuse to sign a treaty with the united states. c. the british won a decisive victory at saratoga. d. after the victory at saratoga france gave open support to the united states including arms money and ships.