 Chad is a landlocked country in Africa whose northern region lies within the eastern reaches of the Sahara Desert and whose southern region lies within the eastern portion of the Sahel . It borders Libya to the south , Niger to the east , Sudan to the west , and the Central African Republic to the north . Chad was originally part of French West Africa until 1960 , when it declared independence . Some four years later , the former French colony made its début at the 1964 Summer Olympics in Tokyo , Japan . For the next three decades , Chad became embroiled in civil war and experienced invasions by Libya and upheavals by Sudanese @-@ backed rebels ; the civil war ended in 1990 , although rebel threats had persisted between then and 2008 . During Chad 's greatest era of instability , athletes from the country did not attend the 1976 Summer Olympics in Montréal , Canada or the 1980 Summer Olympics in Moscow , USSR , although delegations were sent to all other games between 1964 and 2008 . 
 Chad <a href='drop_aux' title='1'><mark>is</mark></a>a landlocked country in Africa whose northern region <a href='uninflect' title='2'><mark>lies</mark></a> within the eastern reaches of the Sahara Desert and whose southern region <a href='uninflect' title='3'><mark>lies</mark></a> within the eastern portion of the Sahel . It <a href='uninflect' title='4'><mark>borders</mark></a> Libya to the south , Niger to the east , Sudan to the west , and the Central African Republic to the north . Chad was originally part of French West Africa until 1960 , when it declared independence . Some four years later , the former French colony made its début at the 1964 Summer Olympics in Tokyo , Japan . For the next three decades , Chad became embroiled in civil war and experienced invasions by Libya and upheavals by Sudanese @-@ backed rebels ; the civil war ended in 1990 , although rebel threats <a href='been_done' title='5'><mark>had</mark></a> persisted between then and 2008 . During Chad <a href='null_genetive' title='6'><mark>'s</mark></a>greatest era of instability , athletes from the country did not attend the 1976 Summer Olympics in Montréal , Canada or the 1980 Summer Olympics in Moscow , USSR , although delegations <a href='uninflect' title='7'><mark>were</mark></a> sent to all other games between 1964 and 2008 . 
Chad a landlocked country in Africa whose northern region lie within da eastern reaches of the Sahara Desert and whose southern region lie within the eastern portion of the Sahel . It border Libya to tdasouth , Niger to the east , Sudan to thdaest , and the Central African Republic to thedarth . Chad was originally part of French West Africa until 1960 , when it declared independence . Some 4 yrs later , the former French colony made its début at the da4 Summer Olympics in Tokyo , Japan . fa the next three decades , Chad became embroiled in civil war and experienced invasions by Libya and upheavals by Sudanese @-@ backed rebels ; the cdal war ended in 1990 , although rebel threats done persisted between then and 2008 . During Chad  greatest era of instability , athletes from the country did not attend the 1976 Summer Olympics in Montréal , Canada or the 19daSummer Olympics in Moscow , USSR , although delegations was sent to all other games between 1964 and 2008 .