Greece had lots of mountains and valleys, and very indifferent terrain which lead to numerous different groups in different parts of Greece, instead of just one very powerful united empire. Along with this, the Mediterranean caused them to want to explore and branch out and not stay in one place with only one empire.
Answer:
The US was pulled into the war after the sinking of the Lusitania by German U-boats.
The arrival of the Americans lifted the long standing stalemate of the western front, and allowed America to have a big role on the affairs of the peace deal.
The Zimmerman Telegram was a telegram to mexico to invade US territory.
Some of the Seminoles remained in their land up through the 1940's.
Answer: formation of Warsaw pact was a part of a process of bi-polarization (in ideological, political and military term as well) of the world. Already during Marshall plan (rejected by Eastern European countries) "Iron curtain" started to divide European continent. In 1949 NATO was established. Warsaw pact of reaction to NATO and also reaction to the integration of Western Germany into NATO. Warsaw pact came into existence in 1955.
Explanation: Warsaw Pact was established between Russia and seven eastern European countries in 1955. At that time there was already a Cold War between two blocks. The pact was established as a balance of power.