The following year , at the Convention of LOCATION@1 on March NUMBER@1 , NUMBER@2 , PERSON@1 returned with seven ships and requested that the MISC@1 sign the MISC@2 and Amity , '' establishing formal diplomatic relations between LOCATION@2 and the LOCATION@3 .

Next year , on 31st March NUMBER@2 , PERSON@1 came with seven ships , and MISC@3 signed a treaty -LRB- known as the Convention of LOCATION@1 -RRB- established diplomatic relationship with the LOCATION@4 .
