Anyone pls help don’t know what it is

The answer is "Flooding rivers".

Explanation:

Floods can happen in rivers also, especially around waterway curves and meandering when fluxes surpass the bandwidth. Businesses and homes are often destroyed by floods while they're on the streams' native flood plains.

In terms of developing civilization, the floods formed the most important part of the topography of Fertile Crown because the floodwaters would create silt and good land. This one is employed for the cultivation and sustenance of rising societies.

"the royal proclamation of 1763"

hello,

i'm not so sure but i hope this in anyway.

the president of russia is head of state, and of a multi-party system with executive power exercised by the government, headed by the prime minister, who is appointed by the president with the parliament's approval.

hope this : )