The P wave is the primary preliminary wave because it is the first to arrive at a seismic station after an earthquake.
Scientists<span> can tell by observing the seismic waves that are recorded all over the surface of the </span>earth<span> from distant earthquakes. The seismic waves are reflected (bounced off) </span>layers<span> of different density, and they are refracted (bent) when they enter </span>layers<span> of different density.</span>
Truman and Stalin we’re both powerful leaders. In 1947, the ‘Truman doctrine’ was announced. This doctrines purpose was: to contain threats in Greece and Turkey, and to counter Soviet geopolitical expansion during the Cold War. This was an act of maintaining peace.
Similarly, Stalin had also created a foreign policy which was commonly referred to as, ‘Stalin’s four point foreign policy’. This policy was declared in 1939, and was used to enforce his ideas of communism and to better the Russian people.
To conclude, both Truman and Stalin used foreign policies to maintain and control peace within their countries.
The features of social democracy that are common in Europe are mainly universal health care and tuition-free college. Europeans also get the minimum living wage. They benefit from these features with a cost. Citizens, most especially the rich ones, pay higher taxes to fund these necessary benefits.
