Answer:
The building of a postal system helped to increase the economy.
Answer:
Many prisons force inmates to work for no pay because of this clause. Inmates are sometimes overworked or have unsafe conditions. Under the 13 amendment, this is all legal because it is punishment for a crime.
The described experiment wants to check the mass movement of the rocks, soil and grass on the ramp.
<h3>What can be concluded from the experiment?</h3>
Once the student applies the water on the ramp we could see the objects slide down the ramp. This is caused because the friction of the ramp decreases and the force of gravity pulls objects towards the ground.
According to the above, the experiment would be a model of mass movement.
Learn more about experiments in: brainly.com/question/11256472
#SPJ1
The correct option is: trade.
Explanation
Portugal's empire was extensive, and the country mostly thrived on trade. In fact, they had a big commercial network with other countries.
Moreover, their main source of trade income was Brazil, since they exported diamonds, slaves and other goods too.
