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Review
Review
100

an extensive group of states or countries under a single supreme authority

empire
100

 a feature that blocks the movement of people, products, or ideas

barrier

100

able to support the healthy growth of many things, especially plants

fertile

100

to supply water to crops through artificial means

irrigate 

100

a union or association formed for mutual benefit

alliance

200

the basic structure of something

framework

200

 surrounded by land, distant from an ocean or sea

inland 

200

of or relating to the production, distribution, and consumption of goods and services

economic 

200

the long-term trends in weather elements and atmospheric conditions

climate

200

a settlement controlled by a separate country

colony

300

to claim land for a nation by establishing a settlement

colonize

300

to enter despite opposition, especially to take control

invade

300

someone who buys and sells goods or services for profit

merchant 

300

 an employer or employee who helps produce goods and services

human resource

300

 a narrow strip of land connecting two larger land areas

isthmus 

400

an area of land surrounded by water on three sides

peninsula

400

related to government

political

400

an area claimed by a person or country through inhabitation, generally with the intent to use the land for gain

settlement 

400

a broad statement or idea that is applied to a group of people or things

generalization

400

 characteristic of or relating to Greek civilization in the ancient Mediterranean world

Hellenistic 

500

a large area of flat land with few trees

plain

500

an object made or used by humans long ago

artifact 

500

 to favor or oppose someone or something because of certain characteristics, especially in an unfair manner

bias

500

 an outdoor theater or performance area, often built into the side of a hill with rows of seats surrounding a central stage

amphitheater 

500

an astronomical instrument for taking the altitude of the sun or stars which could be converted to find latitude

astrolabe