The pentagon and the World Trade Center
The European Union currently has a contentious record in terms of its economic and politic success. However, the union can be considered a success in that it has achieved something groundbreaking in a part of the world that has historically been ravaged by conflict over the centuries. The union seeks to create democratic peace and economic integration between the countries which it has so far succeeded in doing. The union has also succeeded in removing national borders and barriers to trade increasing the flow of goods and people throughout the continent. There are many other factors that can be considered successes, but recently the union has had troubles in regards to economic growth which have put the union at risk of potential collapse or countries potentially deciding to leave the union.
Subregion 4 is the location of Central America
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Answer: Hot air is less dense than cool air; the heated air causes the balloon to rise simply because it is lighter than an equal volume of cold air. Buoyancy is an upward force that the air exerts, and it helps hot-air balloons and blimps stay in the air. A hot air balloon uses a burner to heat up the air inside the balloon.
Answer:
B. They help historians make connections between different historical events.
Explanation:
Primary sources and secondary sources help historians to research and conclude about the past. Primary sources are the basic and immediate account of the past. Sources include books, letters, video data, databases, etc. Secondary sources are the interpretation that gets followed after the primary ones. Historians form analysis and researches out of the primary texts and data. The events that occurred in the past are written and presented by the writers who do not witness those events personally. These sources help the historians to present interpretations of the events and form connections between them.
