Which of the following was an outcome of the Columbian Exchange? А
The life expectancy of Native Americans increased.
Horses and smallpox were introduced in Europe.
с
Sugar and rice were introduced in Africa.
D
The diets of Europeans improved.
E
The population of Europe decreased.

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.

considered the turning point in pacific war. the japanese tried to lure the american navy out so it could be destroyed but failed. the americans were led by admiral chester nimitz. the victory by america would put them on the offensive for the remainder of the war.