The fundamental modernization of ribbed groin vaults in Gothic cathedrals was to accommodate stained glass window. The ribbed groin vault is the connection of two or three barrel vaults yields a rib vault or ribbed vault when they are bordered with an armature of piped masonry often engraved in decorative patterns and associate groin vault is an older custom of vault structure.
Answer:
Two days after sealing off free passage between East and West Berlin with barbed wire, East German authorities begin building a wall—the Berlin Wall—to permanently close off access to the West.
The answer is Kilimanjaro.
In the speech Washington argued for individualism by suggesting that the black people try to develop themselves.
<h3>Summary of Washington's speech</h3>
The summary is that this person was advocating that the black man endures the stereotypes and segregation for a while and concentrate their efforts on self help.
Since then there has being great changes in segregation. Schools have become accepting to all and no one is excluded from systems based on their race in America.
The work ethic has remained strong since then. People have learnt more skills for survival and more people have being educated.
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There is now no restriction on the amount of money that organizations or individuals can give to candidates in national elections due to a ruling by "the Supreme Court", although this ruling was highly controversial.
