URL_QS = 'https://en.wikipedia.org/wiki/Kazakhstan'
r = requests.get(URL_QS)
soup = BeautifulSoup(r.text, 'lxml')

# Only keep the infobox (top right)
infobox = soup.find("table", class_="infobox geography vcard")

if infobox:
    formation = infobox.find_next(text = re.compile("Formation"))

    if formation:
        independence = formation.find_next(text = re.compile("independence"))

        if independence:
            independ_date = independence.find_next("td").text
        else:
            independence = formation.find_next(text = re.compile("Independence"))

            if independence:
                independ_date = independence.find_next("td").text


print(independ_date)

Almaty