QUES: The creation of modern-day Eritrea is a result of the incorporation of independent, distinct kingdoms and sultanates (for example, Medri Bahri and the Sultanate of Aussa) eventually resulting in the formation of Italian Eritrea. In 1947 Eritrea became part of a federation with Ethiopia, the Federation of Ethiopia and Eritrea. Subsequent annexation into Ethiopia led to the Eritrean War of Independence, ending with Eritrean independence following a referendum in April 1993. Hostilities between Eritrea and Ethiopia persisted, leading to the EritreanEthiopian War of 19982000 and further skirmishes with both Djibouti and Ethiopia.

In what year was the Sultanate of Aussa founded?
What is the answer?
ANS: unanswerable
QUES: The first department stores Lane Crawford was opened in 1850 by Scots Thomas Ash Lane and Ninian Crawford on Des Voeux Road, Hong Kong Island. At the beginning, the store mainly catered visiting ships' crews as well as British Navy staff and their families. In 1900, the first ethnic-Chinese owned Sincere Department Store was opened by Ma Ying Piu, who returned from Australia and inspired by David Jones. In 1907, another former Hong Kong expatriate in Australia, the Kwok's family, returned to Hong Kong and founded Wing On.

Who established Lane Crawford?
What is the answer?
ANS: Scots Thomas Ash Lane and Ninian Crawford
QUES: Earthworms are Oligochaetes that support terrestrial food chains both as prey and in some regions are important in aeration and enriching of soil. The burrowing of marine polychaetes, which may constitute up to a third of all species in near-shore environments, encourages the development of ecosystems by enabling water and oxygen to penetrate the sea floor. In addition to improving soil fertility, annelids serve humans as food and as bait. Scientists observe annelids to monitor the quality of marine and fresh water. Although blood-letting is no longer in favor with doctors, some leech species are regarded as endangered species because they have been over-harvested for this purpose in the last few centuries. Ragworms' jaws are now being studied by engineers as they offer an exceptional combination of lightness and strength.

How much of near-shore marine annelids are burrowing?
What is the answer?
ANS:
up to a third