The flags that were placed by people who landed there
Because of Dhaka's position below sea level the city experiences yearly flooding, particularly around the monsoon seasons and has the constant threat of rising sea levels, which would of course cause more flooding.
The correct option is LOESS.
Loess refers to a compacted yellowish deposit of wind blown sediments which is usually found extensively in the mid latitudes. Loess is formed by the accumulation of dust that had been blown by the wind. Scientists believed that about 10% of the earth's land area is covered by loess.<span />
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They can present coherent and consistent messages to their publics with little fear of contradictiontotalitarianism is a political system in which the state recognizes no limits its authority strives regulate every aspect public private life wherever feasible propaganda totalitarian regimes. Through threats and violence, even enlightened people will compromise their values.