The correct answer should be the train. Railroads were built and these helped people transfer goods and heavy things like machines all over the country. Railroads were key for everything in the 19th century.
In order for the constitution to be amended it must be passed by the federal government and it also has to be passed by 3/4 of the states... the whole point of federalism is that in addition to a central government (the united states federal government) there are separate sovereign states or provinces (individual states)
because an amendment needs the blessing of both the federal government and the states it demonstrates federalism
The correct answer is B. Garrison believed that the northern states should secede from the Union in protest of southern slavery practices.
Garrison publicly called for the north to secede from the Union in order to cut ties with the slaveholding south. This is because he believed that the institution of slavery was immoral
Jean -Bertrand Aristide was the first democratically elected president of A) Haiti.
hope this helps