Find 1) countries that each of the major lots and longs (latitudes and longitudes) go through
1 Equator
2. Tropic of Concer
3. Arctic Circle
4. Tropic of Capricorn
5. Antarctic Circle
6. Prime meridian
7. International date line

There are total 13 countries which equator passes through. Basically two of them are Congo and Brazil.

Explanation:

Equator refers to the imaginary line which divide the globe into two hemisphere that are southern hemisphere and northern hemisphere. Some continent lies in the southern hemisphere and some lies in the northern hemispheres.

There are totally 3 continents which lie through equator name as

1.   Asia

2.  South America and Africa

3.  Congo and Brazil, are the countries whose major latitude and longitude go through equator.

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