Answer:
The 16th and 17th centuries known as the "incubation period of the modern world" because of the breakthroughs that occurred in the use of water and wind energy for the completion and powering of various industries.
There was also the issue of military revolution which occurred around that time and was the period in which gun powder production started . This led to subsequent production of other weapons during this period.
A. city blocks laid out in a grid pattern.
C. a standardized system of weights and measures
The houses were built with stones and bricks, and some of the houses were multi-level, so B is not a feature of the ancient Indus cities.
Answer:
Bellows.
Explanation:
Bellows refers to a device or instrument which is typically used to create a strong air current (blast of air) for blowing a fire. They are generally designed to have an air chamber, valve, nozzle (tube) and two handles
Generally, bellows can be used to provide air for a fire. The handles are joined together with a flexible leather bag (air chamber). When the handles are expanded, the valve draws in air to fill the air chamber and these air is then dispensed (expelled) through the nozzle (tube) by contracting (squeezing) the two handles which causes the air chamber to compress.
<em>Hence, the strong air current (blast of air) produced by bellows are used for blowing a fire. </em>
Buddy Holly represented the first top-40 hit for Weezer. "<span>Weezer is an American rock band formed in Los Angeles in 1992, consisting of Rivers Cuomo, Patrick Wilson, Brian Bell, and Scott Shriner" (Wikipedia)</span>
Christopher Columbus discovered the Caribbean islands while Ferdinand Magellan was the first to circumnavigate the earth.
Explanation:
Christopher Columbus was the earlier one of the two great explorers and his exploration was to the west of Spain where he eventually discovered the Caribbean islands and led o the discovery of the Americas.
Ferdinand Magellan was also a very ambitious sailor and he tried to circumnavigate the earth with his expedition of six ships.
HE did this around 1520 and was eventually successful and in the process had discovered the Magellan straights too.
