In the 1400s, European explorers benefited from "improvements in map-making skills," since these allowed for greater location accuracy. GPS and steam ships would not be invented for quite some time.
Image shows black people voting, so the amendment to the US constitution that directly guarantees the right shown in that image is 15th. 15th amendment of the united states constitution granted the right for citizens to not be denied their right to vote by states or federal government based on their race or color.
Marshall Harlan said that.
In reaction
to the fugitive slave law, most of the people in the north showed open defiance
to the law and devised means to support the Underground Railroad to Canada. It
is reported that they formed committees to facilitate the transport of African
American slaves to Canada through the Underground Railroad.
