Imagine that it is he year 2030 and you are a history textbook author. describe for your readers the u. s. population in the year 2018

By  population the United States of America in 2018 was the third largest country in the world, with 327,270,588 habitants in september 2018. The largest state in the USA population is California, which is estimated to be home to just over 39.5 million people and its largest cit New York City with an impressive estimate of 8.5 million habitants. The population of the United States grows continuedly driven by a high level of inmigration. This makes the country's racial profile vastly diferent, although whites remained to be the single largest racial group in the US. The average life expectancy of a person born in the United States by 2018 is 79.05 years, as is common in most countries in the world, women have a higher life expectancy than men. Allthough the United States, in 2018, had the largest overall economy in the world, it does not have the highest GDP per capita, it ranked 19th in the world. The language most commonly speaking is English, followed by Spanish and Chinese. The cultural diversity of the United States is no more evident than in the wide range of religious beliefs practiced across the country. Protestant/ Christian tradition is clearly mayority, and a significant minority identifies as having no religion at all. Young people make up the majority of this group.

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.

the correct answer is d