The line between two countries or areas.
border
To buy, sell, or exchange goods.
trade
Many; more than one.
multiple
To look for something.
search
To give someone something they need or want
provide
Things that are bought and sold, such as food, clothes, or products.
goods
A safe place where someone can go for protection.
refuge
To take control of a country or people by force.
conquer
A person who moves from place to place instead of living in one permanent home.
nomad
A person who buys and sells goods.
merchant
A society with its own culture, government, cities, and way of life.
civilization
To say that something belongs to you or that something is true.
claim
The study of the Earth, places, land, water, and people.
geography
A group of connected people, places, or systems.
network
The process of becoming larger or spreading to more places.
expansion
Lasting for a long time; not temporary.
permanent
Related to the sea, ships, or sailing.
maritime
A system of beliefs about God, gods, or spiritual ideas.
religion
A series of rulers from the same family.
dynasty
To discuss something in order to reach an agreement
negotiate
A journey made for a special purpose, such as exploration.
expedition
Related to buying, selling, or business.
commercial
Plants that grow in a particular area.
vegetation
Groups of people born and living around the same time; also parents, children, grandchildren, etc
generations
The natural world and surroundings where people, animals, and plants live.
environment