The water level drops before the arrival of a tsunami.
Hope this helps.
The battle of Antietam was known as the bloodiest war that happened in America. Here, the <span>Union won the battle which led to the Emancipation Proclamation. The proclamation </span><span>was given by President Lincoln who declared the freedom of slaves in the South. </span><span>This immediately helped the slaves escape the Confederates and go to the Union based areas.</span>
Ratification of a constitutional amendment
In 1985, reform-minded Mikhail Gorbachev came to power as General Secretary of the Soviet Union. He introduced reforms along liberal lines. The two reforms most commonly associated with him are glasnost and perestroika. Glasnost means 'openness' and refers to government transparency and increased freedom of expression.
Perestroika refers to a series of political and economic reforms meant to kickstart the stagnant 1980s economy of the Soviet Union. Its architect, President Mikhail Gorbachev, would oversee the most fundamental changes to his nation's economic engine and political structure since the Russian Revolution.
