Which of the following became an issue of contentious debate and dominated American politics during the period of westward expansion? A
the forced removal of American Indians from their lands and onto newly created reservations

B
the expansion of slavery into the western territories and the increased growth of slave populations

C
the building of a transcontinental railroad linking the east and the west coasts of the nation

D
the decision to allow immigrants from Asia to come to the United States to work and live

a i think would be correct.

Explanation:

because it was ethicly wrong to them and back then slaverey wasnt seen as being an issue all that time ago

the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.

which

like dude you only explained

the problem not the