The United States wanted to build the Panama Canal in order to save time and money on trading. Before the Panama Canal, people had to sail all the way around Africa in order to get to the other side of the world, which costed much more money and took a lot longer. The US owns the canal because of the Hay-Bunau-Varilla treaty, which gave the rights to the USA to build and manage it.
"(4) The Square Deal was superior to any other <span>president’s program" is the only option that is an opinion of the deal as opposed to a fact, since it's subjective. </span>
America was able to rebuild faster.
America's population size, economic strength and industrial powers allowed the US to not only build up her armies, but also supply allies through the lend-lease act. In fact, with all the population & natural resources the US owned, they were able to build almost as fast as their equipment being destroyed, hence a quote of "Once a .. .[tank in this instance] was destroyed, it was pushed out of the way, and replaced at once..."
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