" For 10 points, name this country whose more modern wars have included ones involving the U.S. and the Taliban.
Pierre Louis Napoleon Cavagnari signed the Treaty of Gandamak in this country with Mohammad Yaqub Khan. Reginald Dyer refused to honor a ceasefire request from Nadir Khan during one conflict in this country. This country's border with its eastern neighbor became the (*) Durand Line after the Treaty of Rawalpindi, and Elphinstone's column was lost on a retreat from this country. Britain fought several wars with this country in response to Soviet interests in it during the 1800s as part of the "Great Game." For 10 points, name this country whose more modern wars have included ones involving the U.S. and the Taliban.
Pierre Louis Napoleon Cavagnari signed the Treaty of Gandamak in this country with Mohammad Yaqub Khan.
Afghanistan