Does Part 1 of the 1116 Foreign Tax Worksheet refer to general income or only income from foreign sources?

My only foreign source income is from dividends. When filling out Part 1 of the 1116 worksheet, I was uncertain as to whether I am asked for 1a to provide total income from all sources or only the income from each country. Too, can you tell me please which source is referred to for lines g and h of Part 1? 

 

Thanks in advance for your assistance