Why was the U. S. joining NATO unprecedented in this country’s history?

NATO, or the North Atlantic Treaty Organization was established to protect the western European states and the Democratic system of governance against the rising influence from the Soviet Union and the communism.

USA was the leading member and one of the founding members of the NATO. This, effectively made the USA the leader of the "free world" and gave them the upper hand against the Soviet influence in Europe and out of the Europe.

Moreover, the combined military strength of the NATO made in the most powerful military organization in the world.

Explanation:

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

john f. kennedy purpose was to make his argument a strong appeal to emotion in order to make an impact and connection to american citizens. he want to achieve peace by telling the citizens they shouldn't be afraid of other nations.

explanation: