Located in South East Asia and approximately 10,000 miles away from the Continental United States the Vietnam climate and geographical plains made it hard to travel and transport supplies.
Much of Vietnam, especially the mountains is covered by dense jungle (The Embassy of the Socialist Republic of Vietnam in the United Kingdom) Has 2 major rivers used largely for transportation.
Southern Vietnam was bordered by Laos and Cambodia and Was divided by the US military into FOUR sections making communication and back up difficult. also, the United States at the time were not trained widely for jungle battle, and were extremely vulnerable for surprise attacks.
Ziggurats.
The mesopotamia region was famous for Ziggurats. Some of the most famous Ziggurats of this region are known as The Great Ziggurat of Ur and Khorasabad. These structures looked like gigantic pyramids and had the form of hundreds of steps. They were not considered places of worship. Instead they were merely believed to house gods. That is the reason why sacrifices were made here and offerings to appease the god were made here too. This was a tradition that went on during the 3rd millennium BC.
They were going to let the people decide for themselves if they where going to allow slavery in their territories.
An eminent result of the 1812 war was the American realization that they could fight and survive a war with European power.
The War of 1812 or otherwise called the Second War of Independence" was the motivation behind the Treaty of Ghent. The arrangement was between the United States and United Kingdom marked on December 24, 1814. Among its conditions were Americans gaining a lot of area. At this treaty, the prewar boundary between the United States and Canada was re-established. The agreement came about into peace connection between the two nations with prewar regions maintained.
Frederick Jackson Turner and the frontier. A year after the Oklahoma Land Rush, the director of the U.S. Census Bureau announced that the frontier was closed. The 1890 census had shown that a frontier line, a point beyond which the population density was less than two persons per square mile, no longer existed.
I hope that helped!!!