Why did early farmers in the andes mountains have to develop creative ways to grow food?

A. Because the area got very little rainfall during most of the year

B. Because wild animals in the area were hard to control

C. Because the mountains were too steep to grow crops without terraces

D. Because there were no wild plants or animals to domesticate

The answer is C

Explanation:

The andes are some of steepest mountains but the Incas created the method of terraced fielding in order to grow their resilient breeds of crops such as potatoes, quinoa and corn.

after a more than a decade and a half of combating al qaeda (aq) in afghanistan and pakistan,

the united states faces a diverse array of threats from al qaeda affiliates in the middle east and

africa. while senior al qaeda figures reportedly remain based in pakistan, the network includes

a number of affiliates across the middle east and africa including al qaeda in the arabian

peninsula (aqap), al qaeda in the islamic maghreb (aqim), and al shabaab. al qaeda also

retains a small but possibly growing presence in afghanistan. u.s. officials have stated that al

qaeda still maintains a foothold in syria through its ties to hay’at tahrir al sham (formerly

known as the nusra front), though the exact nature of that relationship may be evolving. this

report examines the threat posed by al qaeda affiliates in the middle east and africa as described

by u.s. officials and outside observers, as well as the u.s. approach to date in responding to these

threats. this was all i could find hope this : )