The main purpose of Roosevelt's Great White Fleet was to display American naval power.
deliver supplies to allies.
train navies from other nations.
allow Roosevelt to visit leaders overseas.

display American naval power

Explanation:

The "Great White Fleet" derived its name from the white color of the Navy battle ships' hulls. This group of ships were tasked by Theodore Roosevelt to visit many countries in order to let them know how powerful the US Navy was. Their circumnavigation lasted from Dec. 16, 1907 to Feb. 22, 1909. It enhanced peaceful relationships with other nations and made the Americans truly inspired.

Such display of power is considered not to be its first time. Roosevelt also did a similar demonstration during the Algeciras Conference which was held in 1906.

what are the options ?

attacks by the seljuk. a devastating blow to the entire byzantine world was dealt by christian crusaders from the west. the venetians were eager to destroy byzantine power and offered the crusaders money, ships, and part of the spoils of war.

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