1. grassland dotted with small trees and shrubs 2. african state with christian rulers 3. desert on earth 4. high, flat area of land 5. area in the east of africa with mountains and deep canyons

1. Savanna, 2.  Portuguese, 3. Sahara Desert, 4. plateau, 5. Ethiopian Highlands

Explanation:

Tropical savanna consists of broad grasslands which are dotted with small trees and shrubs of all types. These are home to diverse flora and fauna and sometimes the grasses can grow up to tall as elephants. Portuguese were the first Christian settlers of the eastern African coasts and these were to first take over the East African countries like Kenya, Indian ocean and Tanzania. Sahara desert is the world's largest dry and barren desert is outside the polar areas located in northern Africa. And covers a surface area of 3.5 miles. A flat landscape is called a plateau,  if this is relatively high and flat then its table or a plateau. Etho[ian highlands are the rugged mountains that are located in the horn region of northeastern Africa. Having a height of 4,550 meters above sea level and is considered to the roof of the world.

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

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