Add landen.json file
Add conventional, local and former names and abbreviations

AD, AE, AF, AG, AI, AL, AM, AN, AO, AQ, AR, AS, AT, AU, AW, AX and AZ
Add conventional, local and former names and abbreviations

BA, BB, BD, BE, BF, BG, BH, BI, BJ, BL, BM, BN, BO, BQ, BS, BT, BV, BW, BY, and BZ
Add conventional, local and former names and abbreviations

CA, CC, CD, CF, CG, CH, CI, CK, CL, CM, CN, CO, CR, CU, CV, CW, CX, CY and CZ
Add conventional, local and former names and abbreviations

DD, DE, DJ, DK, DM, DO, and DZ
Add conventional, local and former names and abbreviations

EC, EE, EG, ER, ES, and ET
Add conventional, local and former names and abbreviations

FI, FJ, FK, FM, FO, and FR
Add conventional, local and former names and abbreviations

GA, GD, GE, GG, GH, GI, GL, GM, GN, GQ, GR, GS, GT, GU, GW, and GY
Add conventional, local and former names and abbreviations

HK, HM, HN, HR, HT, and HU
Add conventional, local and former names and abbreviations

ID, IE, IL, IM, IN, IO, IQ, IR, IS, and IT
Add conventional, local and former names and abbreviations

JE, JM, JO, and JP
Add conventional, local and former names and abbreviations

KE, KG, KH, KI, KM, KN, KP, KR, KW, KY, and KZ
Add conventional, local and former names and abbreviations

LA, LB, LC, LI, LK, LR, LS, LT, LU, LV, and LY
Add conventional, local and former names and abbreviations

MA, MC, MD, ME, MF, MG, MH, MK, ML, MM, MN, MO, MP, MQ, MR, MS, MT, MU, MV, MW, MX, MY, and MZ
Add conventional, local and former names and abbreviations

NA, NC, NE, NF, NG, NI, NL, NO, NP, NR, NU, and NZ
Add conventional, local and former names and abbreviations

OM
Add conventional, local and former names and abbreviations

 PA, PE, PF, PG, PH, PK, PL, PM, PN, PR, PS, PT, PW, and PY
Add conventional, local and former names and abbreviations

QA
Add conventional, local and former names and abbreviations

RE, RO, RS, RU, and RW
Add conventional, local and former names and abbreviations

SA, SB, SC, SD, SE, SG, SH, SI, SJ, SK, SL, SM, SN, SO, SR, SS, ST, SU, SV, SX, SY, and SZ