Answer:
Explanation:
His mission was to complete an agreement with the Japanese Government for the protection of shipwrecked or stranded Americans and to open one or more ports for supplies and refueling. ... As a result, Perry's treaty provided an opening that would allow future American contact and trade with Japan.
It would strengthen the navy and enable the U.S to guard its colonies. I believe the building of the Panama Canal was in time of Imperialism (not 100% sure), where countries were trying to take over smaller or weaker countries to accumulate more power.
They carried out a vital and supportive functions such as sowing and reaping. <span />
Railroad tracks and total population is most likely the correct choice.
