The best way to help humanity is to heavily reduce spending on armaments. This is an indescribable expense for many nations (few excepted such as Costa Rica) and is a huge drain on their economies. Armament spending is a very large wealth transfer as follows:
1. governments collect taxes from people but the ultra-rich usually pay minimal or no tax shifting the burden on the lower income, lower wealth people.
2. frequently there is still not enough money so governments extend their indebtedness to rich banks or overseas investors.
3. a sizeable proportion of this collected tax -which could be used to make the life of people better- is instead used on armaments, usually sending money to companies based in Europe or North America.
4. armament companies have a large concentration of uber-wealthy shareholders ...why? Because they are such a fantastic cash cow business. Similarly, there are many well-paid executives, engineers and technicians who earn salaries there often unattainable elsewhere.
5. armament companies employ the best sales executives who appear to have unprecedented contacts in government circles.
6. governments are forever talked into the latest-and-greatest equipment and this leads to the retiring of the last generation's hardware which governments paid a lot for in the first place (frequently they are still paying loans off for these toys) and, at times, these same companies talk governments into very expensive life-extension or upgrade projects which also cost a lot.
7. Back to step 1
Governments seem to ignore these facts:
1. Smaller commitments to "defence" spending (which in many cases should be termed "offence" spending) would keep more money in low income earners' pockets.
2. Overseas indebtedness would reduced markedly which means our own sovereignty is kept.
3. Instead of having large, standing armies, navies and air forces the labour 'wasted' there could instead be used for wonderful humanitarian endeavours. This could involve installation of PV panels on many remote huts, a decent, microbe-free water supply and education.