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Show HN: Map of immigration to the U.S. since 1820

metrocosm.com

51–60 of 114 posts

Re: Show HN: Map of immigration to the U.S. since 1820

#51

Since this page states" "Most illegal immigration is not included" I'd like to see one of these representing the flow of illegal immigrants (especially from and across Mexico) since Obama won his first election (and second).

Is there a way to get reliable data on that?

Re: Show HN: Map of immigration to the U.S. since 1820

#53

This is a cool map and there's tons of information in it. It'd be nice to see more details, like the actual numbers instead of just a top 3 counties list. Or if I pause the timeline and hover over a country it'd be neat if it listed that year's exodus. Why do come countries brighten in some years but then dim later on? Edit: ah I see the associated blog post has a little more info, especially about the brightness que…

Yes. It originally did allow you to hover over the countries to see more information. But combined with everything else it required too much memory and caused it to run slow on mobile browsers.

Doesn't seem like removing a tooltip should make the difference, but it allowed me to simplify the map, remove jquery, and make a few other simplifications to the code.

If I were to make it over again, I would use WebGL for the particles next time instead of Canvas, and performance problems wouldn't be an issue.

Re: Show HN: Map of immigration to the U.S. since 1820

#54
post #50
post #43

Earlier quoted context omitted.

No, importation of slaves to the U.S. was banned in 1808. Most slaves were native-born, to slaves and descendants of slaves.

The case of the Amistad in 1839 (fictionalised in a famous Spielberg movie) shows that this was not at all the case in reality: https://en.wikipedia.org/wiki/United_States_v._The_Amistad I'm sure many slaves were slave-born in that period, but it seems they were still importing people from Africa en masse.

Seriously a fraction of the total slave trade from Africa went to the United States. The vast majority of slaves from Africa went to the Caribbean Islands and South America.

>Of the more than 10 million enslaved Africans to eventually reach the Western Hemisphere, just 388,747—less than 4 percent of the total—came to North America.

This is an excellent infographic showing the travels of the ships of the time via their shipslogs. http://www.slate.com/articles/life/the_history_of_american_s...

Re: Show HN: Map of immigration to the U.S. since 1820

#55
post #50
post #43

Earlier quoted context omitted.

No, importation of slaves to the U.S. was banned in 1808. Most slaves were native-born, to slaves and descendants of slaves.

The case of the Amistad in 1839 (fictionalised in a famous Spielberg movie) shows that this was not at all the case in reality: https://en.wikipedia.org/wiki/United_States_v._The_Amistad I'm sure many slaves were slave-born in that period, but it seems they were still importing people from Africa en masse.

There was the occasional slave-running ship, yes, but I doubt they did business 'en masse'; the profits if successful were good, but besides the prohibition on the trade from the US, they had to deal with interdiction by the Royal Navy, and in those days you did not mess with the Royal Navy.

Re: Show HN: Map of immigration to the U.S. since 1820

#56
post #36
post #6

Surprised me how much came from Canada -- has that been a thing, or is Canada a proxy for other countries?

One thing that stood out to me is that immigration from Canada nearly stopped altogether in the mid 1890s. I wonder if the klondike gold rush was a factor here. I know it spurred a mass migration to the North. As a collateral effect, even Vancouver's population skyrocketed growing from around 13,700 in 1891 to over 100,000 in 1911. https://en.wikipedia.org/wiki/Demographics_of_Vancouver#Popu...

Probably one major factor was completion of the trans-canada rail road to British Columbia, finished in 1885 by CPR. This allowed free movement of immigrants from Coast to Coast, lowering immigration to the US and moving that migration to Western Canada.

Re: Show HN: Map of immigration to the U.S. since 1820

#57
Coincidentally, I saw these state by state migrant origin maps for each decade in animated form on Twitter this morning (showing numbers resident rather than numbers flowing in) http://www.pewhispanic.org/2015/09/28/from-ireland-to-german...

Some predictable phenomena (Cubans being the most common migrant group in Florida from 1970 onwards, Mexicans being the most common migrants in Texas and the West Coast initially and then most places) and some weird ones (why were Laotians so common in Minnesota in 1990, and why is the Ethiopian diaspora the largest in South Dakota as of 2013?)

Re: Show HN: Map of immigration to the U.S. since 1820

#58
post #50
post #43

Earlier quoted context omitted.

No, importation of slaves to the U.S. was banned in 1808. Most slaves were native-born, to slaves and descendants of slaves.

The case of the Amistad in 1839 (fictionalised in a famous Spielberg movie) shows that this was not at all the case in reality: https://en.wikipedia.org/wiki/United_States_v._The_Amistad I'm sure many slaves were slave-born in that period, but it seems they were still importing people from Africa en masse.

I wrote that it was banned; I did not say that enforcement was flawless.

Similarly, trade between the CSA and the U.K. was "banned" as well, but there were successful blockade runners.

Re: Show HN: Map of immigration to the U.S. since 1820

#59
post #58
post #50

Earlier quoted context omitted.

The case of the Amistad in 1839 (fictionalised in a famous Spielberg movie) shows that this was not at all the case in reality: https://en.wikipedia.org/wiki/United_States_v._The_Amistad I'm sure many slaves were slave-born in that period, but it seems they were still importing people from Africa en masse.

I wrote that it was banned ; I did not say that enforcement was flawless. Similarly, trade between the CSA and the U.K. was "banned" as well, but there were successful blockade runners.

Also no data set is perfect, the fact that it was illegal probably means there aren't any ledgers lying around to go off of.

Re: Show HN: Map of immigration to the U.S. since 1820

#60

Coincidentally, I saw these state by state migrant origin maps for each decade in animated form on Twitter this morning (showing numbers resident rather than numbers flowing in) http://www.pewhispanic.org/2015/09/28/from-ireland-to-german... Some predictable phenomena (Cubans being the most common migrant group in Florida from 1970 onwards, Mexicans being the most common migrants in Texas and the West Coast initially…

RE: Laos in Minnesota

Good chance this is actually a lot of Hmong:

https://en.wikipedia.org/wiki/History_of_the_Hmong_in_Minnea...

(source: went to school in the 90s in Minnesota, like 30% of my classmates were Hmong)

Similar deal with Somali in Minneapolis - once there's critical mass of a given group in a given city, it increases the immigration pull because there's a support network. Right: if you do local stuff in Minneapolis, it's trivial to get paperwork in Somali, or find a Hmong translator.

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