keyword

1st railway

Monthly search volume and cost-per-click data for "1st railway" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=1st+railway&country=us" +--------------+------------------+ | volume | 110 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-11 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
when was the first train invented	3,600	$0	14/20
first railway	2,900	$0	20/20
first railways	2,900	$0	14/20
first train	1,600	$0	20/20
the first railway in the world	720	$0	13/20
the first railways	390	$0	14/20
where was the first railway built	140	$0	14/20
first railway line	110	$0	15/20
first rail line	110	$0	14/20
world's first railroad	20	$0	14/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=1st+railway&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt