I believe your answer would be C - Canada.
Eritrean - Ethiopian War
Eritrea x Ethiopia conflict has taken place in the last 20 years in East Africa. It started in May 1998 and "ended" in June 2000, but only in 2018 the Peace Agreement was officially signed. A few years before this conflict, both countries had been fighting a long 30 years war where Eritrea demanded Independence from Ethiopia. However, following peaceful separation in 1993, both countries disagreed over trade, territory and currency issues which led to the second conflict (Eritrean-Ethiopian War).
Boston and New Orleans were both founded as port cities.
Being located in the very middle of Indus River and the Ghaggar-Hakra River, this city had a perfect location in between two major river routes. The city was one of the largest urban centers of the Harappan civilization. Its location allowed it control over the commerce that inevitably used these rivers to transport goods in the region. Also, it provided the city with a source of fresh water and since back then the ridge where the city was located was elevated over the river to avoid its flooding, the location was both located at an important crossroads of river navigation but also protected from natural elements. Thus, it was a hub of commerce, art and a complex social organization.
