Well if your talking about today then the most prevalent is a tie between social media, and the news. But <span>if your talking about like World War l, for example, then posters were prevalent in Britain and Germany because they could target at any audience.</span>
The CORRECT ANSWER is a they needed more slaves
The answer is A, natural selection.
When World War II was over it came to light that the military had rejected over half of the men who were drafted or had given them lighter duties, because they were not fit enough for combat. The United States began to realize it needed to focus more on fitness. A researcher by the name of Thomas K. Cureton began to study exercise and fitness. He conducted many experiments and was able to establish a set of guidelines for maintaining fitness.
Assuming that you're talking about Harriet tubman the abolitionist,
Back then , she experienced some sort of illness on her brain.
She really need some money to get into brain surgery procedure
