1 poi
The people of the Middle Ages, in Europe, had natural barriers that were
helpful in providing safety and essentials, yet these barriers could be a
hindrance for travel. Which of the following lists are an example of barriers
in Europe? *

In the Middle Ages, boats were powered by sails or oars. In the Early Middle Ages, the sailing ship used the most was a Knarr, which was a kind of vessel used for cargo. In order to propel, it used a sole square-rigged sail. In the High Middle Ages, two types of ships were used: the Trade-Cog and the Hulk.

Explanation:

the answer is d. party organizers, volunteers, voters and elected officials.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.