keyword

who first invented sign language

Monthly search volume and cost-per-click data for "who first invented sign language" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=who+first+invented+sign+language&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-08-15 | +--------------+------------------+

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
who invented sign language	1,900	$0	20/20
who invented the sign language	1,900	$0	20/20
who started sign language	1,900	$0	17/20
who made sign language	1,900	$0	15/20
who developed sign language	1,900	$0	14/20
when was sign language invented	1,600	$0	20/20
when was sign language developed	1,600	$0	19/20
who made up sign language	210	$0	13/20
how was sign language invented	70	$0	14/20
where was sign language invented	50	$0	15/20

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=who+first+invented+sign+language&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