For Update 3- 111 YC (technically 111.1 YC; 75 YC from Population, 26 YC from territories owned, 1.1 multiplier from ECO 1)
80 YC to advance to next era
20 YC to expand Boreaportae's population to 7
11 YC into expanding more in the direction of British Columbia, Yukon Territory, Northwest Territory, and Alaska. Do not go south of the Canadian/American border.
For Update 4- 185(Technically 185.13 YC; 105 YC from Population, 48 YC from territories owned, 1.1 multiplier from ECO 1, 1.1 multiplier from 1st Era)
45 YC into Army Attack Tech 1 (Completes it)
50 YC into Army Defense Tech 1 (Completes it)
50 YC into Naval Tech 1 (Completes it)
20 YC to expand Boreaportae's population to 9
20 YC into expanding more in the direction of British Columbia, Yukon Territory, Northwest Territory, and Alaska. Do not go south of the Canadian/American border.
For Update 5- 270 YC (269.83 YC rounded up; 135 YC from Population, 88 YC from territories owned, 1.1 multiplier from ECO 1, 1.1 multiplier from 1st Era)
100 YC to make Urbeaurum at the location of Whitehorse in
this map
100 YC into Army Attack Tech 2 (Completes it)
30 YC into expanding into Alaska and Canada (not south of the Canadian/American border)
40 YC to expand Boreaportae's population to 10 and Urbeaurum's population to 4.