Merca is the capital city of the Lower Shebelle province of Somalia, a historic port city in the region. It is located approximately 109 km (68 mi) to the southwest of the nation's capital Mogadishu. Merca is the traditional home territory of the Bimal clan and was the center of the Bimal revolt.

Somalia, officially the Federal Republic of Somalia, is the easternmost country in continental Africa. The country is on the Horn of Africa and is bordered by Ethiopia to the west, Djibouti to the northwest, the Gulf of Aden to the north, the Indian Ocean to the east, and Kenya to the southwest. Somalia has the longest coastline on Africa's mainland. Somalia has an estimated population of around 17.1 million, of which over 2 million live in the capital and largest city Mogadishu. Around 85% of its residents are ethnic Somalis. The official languages of Somalia are Somali and Arabic, though the former is the primary language. The people of Somalia are Muslims, the majority of them Sunni.