Explain the origins of the american indians and compare the general cultures that they developed in south, north, and central america

The most accepted theory about the origin of the American Indians is that they managed to come to the Americas at the dying phases of the last Ice Age, so 12-13 thousand years ago. They are thought to have come from Asia, through the Baring Bridge, and moved in the interior of the Americas through the gap in between the two large ice masses on the east and west. This theory has been debated though, both about the origin of the American Indians, and about the timing of their arrival, as there have been found multiple clues that suggest that people from Oceania also migrated toward the Americas through the Pacific, as well as migrating much earlier, almost ten times the time suggested.

The civilization that developed in the Americas were heavily dependent on the living conditions. In North America, there were not lot of great civilizations, and the ones that were, were simple agriculture civilizations, which are known for building mounds for several purposes. In Central America and South America, the conditions were more favorable for more developed civilizations to develop. Apart from being based around agriculture, these civilizations were also building large and beautiful buildings. They perfected the usage of several metals, constructed irrigation and drainage systems, and even converted the land in accordance tot heir needs. The organization was also on a much higher level in Central and South America than in North America.

take five to 10 minutes to warm up and cool down properly.

plan to start slowly and boost your activity level gradually unless you are already exercising frequently and vigorously.

be aware that training too hard or too often can cause overuse injuries like stress fractures, stiff or sore joints and muscles, and inflamed tendons and ligaments. sports prompting repetitive wear and tear on certain parts of your body — such as swimming (shoulders), jogging (knees, ankles, and feet), tennis (elbows) — are often overuse culprits, too. a mix of different kinds of activities and sufficient rest is safer.

listen to your body. hold off on exercise when you're sick or feeling very fatigued. cut back if you cannot finish an exercise session, feel faint after exercise or fatigued during the day, or suffer persistent aches and pains in joints after exercising.

if you stop exercising for a while, drop back to a lower level of exercise initially. if you're doing strength training, for example, lift lighter weights or do fewer reps or sets.

for most people, simply drinking plenty of water is sufficient. but if you're working out especially hard or doing a marathon or triathlon, choose drinks that replace fluids plus essential electrolytes.

choose clothes and shoes designed for your type of exercise. replace shoes every six months as cushioning wears out.

for strength training, good form is essential. initially use no weight, or very light weights, when learning the exercises. never sacrifice good form by hurrying to finish reps or sets, or struggling to lift heavier weights.

exercising vigorously in hot, humid conditions can lead to serious overheating and dehydration. slow your pace when the temperature rises above 70°f. on days when the thermometer is expected to reach 80°f, exercise during cooler morning or evening hours or at an air-conditioned gym. watch for signs of overheating, such as headache, dizziness, nausea, faintness, cramps, or palpitations.

dress properly for cold-weather workouts to avoid hypothermia. depending on the temperature, wear layers you can peel off as you warm up. don't forget gloves.

they had more african americans than any other state.

hope this , have a good day. c;