The polished axes were used for forest clearance and the establishment of crop farming, and were effective as to remain in use when bronze and ………………..appeared.

Related MCQs

• During …………………period, polished stone tools were made from a variety of hard rocks such as flint, jade, jadeite and greenstone.
• ………….differentiates between five stages of human development: In the first, people use energy of their own muscles.In the second, they use energy of domesticated animals’.In the third; they use the energy of plants (agricultural revolution). In the fourth, they learn to use the energy of natural resources: coal, oil, gas. In the fifth, they harness nuclear energy.
• Military technology developed rapidly with the widespread use of the cross-bow and ever more powerful artillery, as the city-states of ………….were usually in conflict with one another.
• …………………is a core protocol used over the SONET/SDH backbone of the public switched telephone network (PSTN) and Integrated Services Digital Network (ISDN), but its use is declining in favour of All IP.
• Large-scale production of ……………began in 1971 and this has been of great use in the production of microcomputers.
• …………. Printers use electro-mechanical mechanism that causes hammers or pins to strike against a ribbon and a paper to print the text
• Russian astronomer, ………………., extrapolated his theory creating the Kardashev scale, which categorizes the energy use of advanced civilizations.
• In 1964, …………….developed the CDC 6600, which was the first architecture to use functional parallelism.
• The four steps CPU’s use in their operations are
• ……………. engineers were also the first to devise automaton such as vending machines, suspended ink pots, automatic washstands and doors, primarily as toys, which however featured many new useful mechanisms such as the cam and gimbals.