In terms of musical meter, what do my beautiful hangai land (mongolian long song), anush garun ("sweet spring," for armenian duduk), and rag des (for north indian sitar) all have in common?

They all have free rhythm.

Explanation:

Any rhythmic motion which lacks a metrical structure is known as the Free Rhythm. Though it is rarely observed in Western music it is found in Western art music of the 20th and the 21st century. The presence of free rhythm can be seen in indigenous religious, art and folk music throughout the world. The free-rhythm is more popular in Asia, Eastern Europe, the Middle East and parts of Africa.

the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

explanation:

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)