A longitudinal study, a study that stretches over the span of a long time
Correct answer choice is:
He fought to unify Vietnam under a communist system.
The Viet Cong was the military arm of the National Liberation Front, the Communist Party of the Republic of Vietnam. They operated with the North Vietnamese Army, they were a relentless issue surrounded by the rice paddies and battlefields throughout the war.
Answer: The Dutch
Explanation: British and Dutch are the only Protestant group. British only settled in America and Canada. It says the Dutch settled in a small area of South Americana’s
This is an example of social comparison theory.
Research shows that the mixture of Front air bags and seat belts can reduce the risk of death in a collision by up to 80%.
<h2>Front airbag :</h2>
Frontal air bags are generally designed to deploy in "moderate to severe" frontal or near-frontal crashes, which are defined as crashes that are like hitting a solid, fixed barrier at 8 to 14 mph or higher. (This would be like striking a parked car of similar size at about 16 to 28 mph or higher.)
<h3>What a safety belt is and how it works?</h3>
A safety belt is a strap that fastens a rider to a moving vehicle and prevents him from being thrown out or against the interior of the vehicle during sudden stops. the primary patent for a restraining belt designed to protect passengers in road vehicles was granted to E.J. Claghorn in 1885.
Learn more about prevention of accident:
brainly.com/question/595072
#SPJ4