What was the best commodity introduced to the new world by the columbian exchange?

How did the british show bad leadership during the battle of the somme

Which of these were achievements of the safavid dynasty? check all that apply.

The first map shows colonial powers and their holdings (1945). the second map shows human development worldwide. compare the two maps. what do the maps indicate about regions that gained independence in the second half of the twentieth century? they differ in their development patterns. they are as developed as their colonial powers. they are more developed than their colonial powers. they remain less developed than their colonial powers.