Who is credited with writing an anonymous article about the soviet expansion plans that was influential in the creation of the truman doctrine

George Kennan

Explanation:

In 1947, diplomat George Kennan wrote an article that touched on Soviet expansion plans as well as guiding postwar US policy for decades. In a text in which he only signed "X," he proposed that the United States stop the worldwide spread of communism through ideology and politics instead of war. The proposed policy was known as "containment," and Kennan became a Pulitzer Prize-winning historian.

by 1890, the united states had by far the world's most productive economy. american industry produced twice as much as its closest competitor--britain. but the united states was not a great military or diplomatic power. its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. britain's army was five times the size of its american counterpart, and its navy was ten times bigger. the united states' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. it faced no serious military threats and had little interest in asserting military power overseas.

i believe it d) heterogeneous