On addition to the other answer posted, the Columbian exchange also traded slaves from Africa to Latin America as well as brought diseases to the natives, a large factor in the death of natives in the New World...which led to Africans being brought there. The Spaniards needed workers and the natives they enslaved were dying of disease and poor treatment, so they imported replacements. Guess I'm getting off topic.
The Columbian Exchange was when the old world (Europe) trade with the new world (America) items. for example: Old World had horses. So if Europe never came to America... we wouldn't have them. Or new world had tomatoes. If Europe didn't have tomatoes... We wouldn't have pizza or delicious Italian goods.
By the beginning of the 1920s, women in much of the Western world had already acquired the right to vote, a conquest of the nineteenth-century suffragist movement.
The women of the 1920s left their corsets and went on to wear short hair, painted eyelids of dark color, red lips, low-cut dresses and knee-high socks the color of the skin.
There has been a major change in fashion and social mores. The women went to the beach in a one-piece swimsuit, smoked in public, drove their own car, and talked about sex. The charleston, vibrant dance with rapid movements of legs and arms infected the young At parties and meetings of high society and the intellectual milieu, homoaffective couples felt free to show themselves.
The Progressive Era was a period of widespread social activism and political reform across the United States that spanned the 1890s to the 1920s. The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.