Answer: mongolia and russia
Explanation: if im correct
1) Mass
2) I’m not exactly sure but I do know mass also determines the overall lifespan of a star
The first portion of the galaxy was the halo.
I hope this helps.
Homo ergaster may have been the first human species to leave Africa and fossil remains show this species had expanded its range into southern Eurasia by 1.75 million years ago. Their descendents, Homo erectus, then spread eastward and were established in South East Asia by at least 1.6 million years ago.Oct 30, 2015