Why was mercantilism used by so many countries

Which statement below would be the strongest evidence for the historians view

Match the leaders with their goals at the yalta conference of 1945. franklin roosevelt winston churchill joseph stalin wanted to prevent future threats from germany wanted free elections in eastern europe wanted soviet against japan

"but let us admit texas, and we shall place the balance of power in the hands of the texans themselves. they, with the southern states, will control the policy and the destiny of this nation; our tariff will then be held at the will of the texan advocates of free trade. are our friends of the north prepared to deliver over this great national policy to the people of texas? " - rep. joshua giddings, ohio, may 21, 1844 this quote points to what major issue in the years leading up to the civil war?