Answer : the answer is by moving the u.s. naval fleet to the hawaiian islands, the united states showed that he was determined to defend his interests for this island and in the pacific.
Explanation
IN the 1820's, agents of the United States for commerce and seamen" was appointed to look after american business in the Port of Honolulu. With the consolidation of commercial ties with the american continent, another factor to be considered was the efforts of the american board of commissioners for foreign missions. This was particularly true when the american missionaries and their families became an integral part of the Hawaiian body politic.
Later the Uss peacock was the first naval vessel to visit Hawaii armed with instructions to discuss international affairs with the Hawaii King and Chiefs, and to conclude a trade treaty, then for political issues Great britain and France intented to invade Hawaii but were defeated by the us navy.
The railroad increased trade by making shipping cheaper.
Diseases introduced by the Columbian Exchange caused a sharp decline in population levels in the Americas beginning in the 15th century. The correct option among all the options given in the question is option "C". The natives never faced the diseases that attacked them and so they did not have any cure for them. <span />
Historians hold the view that Rome was founded on a group of seven hills located in the present-day Lazio region of Italy. These hills, named Aventine, Caelian, Capitoline, Esquiline, Palatine, Quirinal, and Viminal are located on the Tiber River's eastern bank, in the heart of the city of Rome.
Explanation: I hope this helps a little