Here is a list of the top 25 (out of 64) collections in their card catalog that have the word "Mexico" in them, sorted by records in the collection. They have some, not as much as the US. For instance, they have the US Census from 1790 - 1940, every 10 years except 1890, although 1790 - 1840 are not very useful. They have just one census for Mexico, 1930. This will give you an idea.

Mexico, Select Baptisms, 1560-1950 (in Spanish) 123,727,841
Mexico, Select Marriages, 1570-1950 (in Spanish) 21,249,762
1930 Mexico National Census (in Spanish) Census & Voter Lists 12,875,759
Border Crossings: From Mexico to U.S., 1895-1964 Immigration & Travel 5,807,437
Distrito Federal, Mexico, Civil Registration, 1832-2005 (in Spanish) 4,937,323
Jalisco, Mexico, Civil Registration, 1857-2000 (in Spanish) 3,957,765
Oaxaca, Mexico, Civil Registration, 1861-2002 (in Spanish) 3,866,681
San Luis Potosí, Mexico, Civil Registration, 1859-2000 (in Spanish) 1,896,237
Veracruz, Mexico, Civil Registration, 1821-1949 (in Spanish) 1,624,732
Hidalgo, Mexico, Civil Registration, 1861-1967 (in Spanish) 1,575,744
Chihuahua, Mexico, Civil Registration, 1861-1997 (in Spanish) 1,562,821
Guerrero, Mexico, Civil Registration, 1833-1996 (in Spanish) 1,551,143
Chiapas, Mexico, Civil Registration, 1861-1990 (in Spanish) 1,542,585
Yucatán, Mexico, Civil Registration, 1860-1926 (in Spanish) 1,521,336
Puebla, Mexico, Civil Registration, 1861-1930 (in Spanish) 1,460,020
Guanajuato, Mexico, Civil Registration, 1862-1930 (in Spanish) 1,415,684
Zacatecas, Mexico, Civil Registration, 1860-2000 (in Spanish) 1,371,091
México Estado, Mexico, Civil Registration, 1861-1941 (in Spanish) 1,340,414
Michoacán, Mexico, Civil Registration, 1859-1940 (in Spanish) 1,337,676
Coahuila, Mexico, Civil Registration, 1861-1998 (in Spanish) 1,186,296
Tamaulipas, Mexico, Civil Registration, 1800-2002 (in Spanish) 1,184,297
Durango, Mexico, Civil Registration, 1861-1995 (in Spanish) 1,042,678
Mexico, Select Deaths, 1680-1940 (in Spanish) 842,801
Sonora, Mexico, Civil Registration, 1861-1995 (in Spanish) 745,194
Nuevo León, Mexico, Civil Registration, 1859-1962 (in Spanish) 702,190

VERY VERY few countries allow death certificates to be shown, they are civil registration documents and people have to purchase copies, you may find death indexes for some countries, which enables you the details required to purchase a copy of the death certificate, burial records ( church) are more widely available and there are several websites which show some.

BUT if you have no idea where in the World someone died and no idea when that death occurred unless the person had a very unusual name you will be hard pressed to find them.
try
familysearch
findagrave
and if you have an idea of the country at least then there are several other websites.
Names in isolation are not how people research their ancestry, that is how websites databases are set up, which is why so many people who only search online do not have their ancestry as many seem to think everything is online when reality is that if you put every single website together they only cover about 5% of records that are available

https://familysearch.org/search
Has maybe a dozen guys of this name. We cannot guess which one you need, or, if he is dead or alive (in genealogy, we hunt dead persons).

https://familysearch.org/search
has about 300 records for it. Since they have over 28,000,000 for "Smith", it is very rare. The only collections they have with more than 2 or 3 records are from the Philippines.

Her Majesty Elizabeth II, Queen of England and about a dozen other countries, has a web site. Her tree is pretty well documented and widely accepted. It goes back a long way.

For us commoners, these two are the biggest sites:
https://familysearch.org/family-trees
and
http://wc.rootsweb.ancestry.com/cgi-bin/...

If you look, be careful; the ads at the top sometimes ask for a name and lead you astray, to a pay site. Scroll down to the bottom. Also, even if you DO enter the surname in the right box, not all of the data there is accurate.

Note 1, on both sites, the people are dead, some for as much as 300 years. You won't find many living people on genealogy sites, and if you do, their names, birth dates and other facts will be hidden.

Note 2, The family trees are only about 75% accurate; treat them as clues, not facts.

For some VERY VERY specific groups, there are widely accepted trees. The people who came over on the Mayflower are one example. The Mayflower Society has most of the people who survived down for 5 generations.