Answer:
The Fertile Crescent is the boomerang-shaped region of the Middle East that was home to some of the earliest human civilizations. Also known as the “Cradle of Civilization,” this area was the birthplace of a number of technological innovations, including writing, the wheel, agriculture, and the use of irrigation
Explanation:
ref from history. com
Robbery and murder where very common on the road to the west. Coming across food was rare. Many people froze or starved on the road.
But while it was terrible for most, a lot brought along pigs, chicken, wheat, and other eatable things to last them the trip. This was useful and could make for a better experience. You could tell why you and your family are traveling west, is it for a better life or do you have family over there? Where are you going? Are you rich or poor? How old are you? What is your family like, these factor in.
With the cotton being 60% of america's exports, the U.S was completely dependent upon cotton. It was one of the only reliable cash crops for plantation owners.
Regarding respiratory changes at birth, changes in blood flow that occur lead to the closure of the foramen ovale the embryonic interatrial connection.
Patent foramen ovale (PFO) is a hole between the left and right atria (upper chambers) of the heart. This hole exists in everyone before birth, but most often closes shortly after being born. PFO is what the hole is called when it fails to close naturally after a baby is born.
The foramen ovale is an aperture in the muscular tissue between the left and right atrium that allows blood to cross the atria and bypass pulmonary circulation during fetal development.
To know more about foramen ovale here
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