Why didn't the United States take the strategy of attacking far from Tomochika?

That depends on how you understand the relationship between "distant close attack" and "distant close attack".

In fact, the United States has always pursued the strategy of "far-reaching and near-attacking", but the specific performance is different in different periods. In the early days of the founding of the United States, its territory was only adjacent to 13 States on the Atlantic side (formerly Britain 13 colonies). After that, it adopted the strategy of attacking far and defending near, and gradually expanded its territory to the Pacific coast (even including Alaska and Aleutian Islands from Russia).

In this period, the so-called "distant friendship" in the United States, to put it bluntly, was easily obtained by using the conflict of interests between its original countries (European powers). In addition, if you need to give another example, Mexico is typical. Capturing and annexing a large area of Mexico is a masterpiece of the strategy of "near attack" pursued by the United States. Even during the American Civil War, in order to maintain the annexed Texas, the United States maintained good relations with France (when France invaded Mexico, Mexicans had no time to recover their homeland).

In addition, the expansion of American power in the Caribbean is also the result of pursuing the strategy of "making friends far away and attacking near". Today, Latin America has become the backyard of the United States.

But with the development of the times, colonialism and expansionism have been spurned by people, even in the United States. And western countries have gradually recognized the essence of the United States' "attacking far and defending near". Coupled with some historical reasons, such as the repeated invasion of Canada by the United States, the benefits are few.

On the other hand, no matter what form of external expansion the United States takes, a big reason is to seize resources. However, in the process of implementing the strategy of "attacking far and defending near", this goal has been achieved to a great extent. For example, now, not only in the United States, but even Canada is also called "American oil depot".

When time entered the 20th century, the comprehensive national strength of the United States has leapt to the first place in the world. However, its foreign policy still bears the shadow of "attacking from far to near" from time to time. For example, during World War II, the United States gave Britain aid in exchange for the right to use Diego Garcia base in the Indian Ocean. For another example, in order to deal with the so-called "hostile countries", we often organize Coalition forces and launch armed forces to "crusade" under the banner of "NATO". These are actually variants (different forms of expression) of the strategy of "attacking far and defending near".