In an influential 1947 article, diplomat George F. Kennan advocated that the US should: a. Invade the Soviet Union to establish a democracy
b. Adopt a more conciliatory policy toward the Soviet Union
c. Conduct covert activities in underdeveloped countries to undermine communist governments
d. Focus its foreign policy on containing the spread of Soviet communism

d. Focus its foreign policy on containing the spread of Soviet communism

Explanation:

In an influential 1947 article, diplomat George F. Kennan advocated that the US should: "Focus its foreign policy on containing the spread of Soviet communism."

In the article which was titled the "X-Article" and published in a journal named Foreign Affairs George F. Kennan described that "The main element of any United States policy toward the Soviet Union, must be that of a long-term, patient but firm and vigilant containment of Russian expansive tendencies.”

c it says nothing about connecting those 2 seas.

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)