Протяженность Крыма с востока на запад такая же как у Краснодарского края. Таким образом можно выправить пропорции, а потом "двигаем" на место. У меня получилось вот так:
{
"id":"RU-CR",
"title":"Crimea",
"d":"M121.96,750.2L121.64,750.71L120.48,750.62L120.42,750.9L120.74,751.12L120.03,751.55L120.21,751.8L119.89,752.48L120.36,753.97L119.62,754.47L118.6,754.55L118.27,754.86L116.5,754.57L114.77,755.14L114.18,754.26L113.43,753.77L112.48,753.47L111.71,753.63L110.7,754.47L110.72,754.79L111.04,754.95L110.45,755.26L110.68,755.77L109.57,755.56L109.37,756.15L108.67,756.42L108.4,757.34L107.98,757.73L107.52,757.27L106.95,757.13L106.31,757.44L104.83,757.49L103.75,757.97L102.39,758.76L101.41,760.37L101.4,760.8L101.03,760.74L100.52,761.34L99.79,761.49L99.43,762.31L98.02,762.74L97.2,762.59L97.2,762.59L97.62,762.06L96.84,760.34L96.01,759.82L96.3,758.78L95.85,758.51L95.21,758.76L94.96,758.35L95.51,758.17L95.42,757.77L94.25,757.52L94.25,757.52L94.29,757.14L94.76,756.78L94.74,755.16L94.37,754.05L93.36,752.89L92.79,752.62L91.65,753.25L88.49,750.54L87.15,750.49L86.2,751.14L84.79,750.72L84.97,750.37L84.66,750.09L85.63,749.01L87.44,747.98L87.76,748.09L87.93,747.8L87.73,747.63L88.52,746.98L90.56,745.99L90.93,745.29L91.46,745.57L92.45,745.15L93.11,744.51L93.32,744.64L93.65,744.25L94.18,744.49L94.81,743.79L95.43,744.41L95.41,743.58L96.13,743.3L96,743.01L94.85,743.07L94.82,741.7L95.07,741.31L94.83,740.65L94.83,740.65L95.02,740.58L94.82,739.46L95.08,739.41L95.08,739.41L96.42,740.82L96.76,740.44L96.55,740.1L96.88,740.13L97.07,740.57L96.68,741.03L97.81,741.65L98.28,741.57L97.68,741.32L97.79,741.16L98.48,741.06L99.02,741.42L99.11,741.79L99.96,742.36L99.56,742.78L99.2,742.62L99.64,743.17L100.26,742.97L99.96,742.08L99.76,742.2L99.22,741.75L99.29,741.49L100.22,741.78L100.45,742.45L100.71,741.73L100.81,742.33L101.17,742.53L101.29,742.18L101.1,742.03L101.47,741.9L101.94,742.76L102.66,743.34L102.64,744L103.09,743.37L103.52,743.45L103.27,742.53L104.02,743.01L103.92,743.83L103.26,744.14L102.88,744.87L102.43,744.9L102.54,745.16L103.2,745.02L104.19,744.07L105.05,743.71L105.09,744.12L104.87,743.94L104.33,744.23L104.19,744.95L105.04,744.65L105.31,745.04L104.32,745.96L104.52,746.15L106.16,745.57L105.65,745.98L105.78,746.3L106.14,746.06L106.32,746.6L106.95,746.39L106.9,746.66L107.48,746.99L108.02,748.03L108.23,748.96L107.5,749.56L108.03,750.57L110.39,751.54L110.22,751.91L110.42,752.21L110.6,751.89L111.35,751.83L111.39,751.37L110.97,751.32L109.97,750.19L107.29,746.47L106.71,745.14L106.71,745.14L106.86,745.06L106.86,745.06L107.85,746.99L109.97,749.92L110.87,750.9L111.89,751.53L113.69,750.89L114.03,750.4L113.94,750.14L114.85,749.11L115.06,749.2L114.81,749.43L115.01,749.79L115.97,750.43L116.7,750.18L116.96,749.43L118.75,749.01L119.89,749.45L120.47,749.34L121.16,749.75L121.53,749.56z"}
Картинка:
Готовое можно забрать отсюда:
https://namn.ru/tools/www/amcharts/russiaHigh-fix.js