| A | B |
|---|
| abreast | side-by-side; up-to-date |
| barrier | anything that stops progress or blocks the way |
| breadth | the distance of something from side to side; width or wide range; largeness |
| capital | wealth that can be used to produce more wealth; the city where the government is located; punishable by death |
| ensure | to make sure or certain |
| external | on or related to the outside |
| feud | a long, bitter quarrel, especially one between two families |
| fortress | a building with strong walls made to be defended against attack |
| frequent | happening often or over and over; to go to over and over |
| frequency | number of times something is repeated |
| frontier | the line between two countries; the outer limits of the settled part of a country; the outer limits of knowledge |
| peasant | a person who makes a living from working the soil, especially in poorer countries |
| petty | of little iimportance; small |
| threat | a warning that one may do harm |
| threaten | to make a threat |
| threatening | suggesting harm or danger |
| utilize | to put to use |
| vast | very great in area or amount |
